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Thread: Experience at driving, slipping tranny and stalling engine

  1. #1
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    Default Experience at driving, slipping tranny and stalling engine

    Well, Ive done it. I got my license and drove about a hundred miles since last friday. Ive have 44 bucks worth of gas and half a tank to go.

    I however have had some problems and shocking experiences.

    Well to start with, I am surprised at how much gas you need to give a car to stay up to speed on any road. I had no idea as a passenger how the grade changes suddenly in what seems like a level road. I can squeal tires at a rolling position with minor throttle, however on i295 after the richmond air port exit I went from 65-45mph and thought my engine had cut out. I gave it gas, heard it up shift and got back up to speed.

    I also discovered an annoying habbit of my engine cutting off at every other stop sign or light. I just shift it to nutral as I coast and put it back in gear at the light. I unplugged the temp sender for the engine and air intake and that seems to limit it. I know I wont know of an over heating situation and may burn more gas, but I hate to spend any more money for another reason.

    Onbroad street the other day I slowed for a cross walk with no light and an elderly person walking across it. I hit the gas slightly to accelerate to the next stop light and I just sat there and 3 seconds later, thump and I started to squeal tires as my tranny slipped. I was just coasting from light to light in afternoon traffic. I turnd off OD, which helped, but it still slips, but does not squeal tires. I added some lucas oil for slipping to the tranny and so far for 7 miles it seems to be working.

    I forgot to mention that when I got to 44 bucks with of gas, gas started to run out the front of the tank behind the drivers seat, so I quit pumping and it quit leaking.

    Also I just spent the weekend switching out the mechanical thermostat and flushing it. I run off a bolt and had to take the front end apart to reach it and grip pliers it out. I still have some minor leaking, but whats a few drops from 4 gallons of fluid?

    I just hope my wheels holds up so I can get a second job and maybe a better car. I wouldnt mind trying a junkyard tranny, but installing it in the mud and sand of my parents yard would make it difficult. The tank and idle problems are easy to fix.

    So?

  2. #2

    Default Re: Experience at driving, slipping tranny and stalling engine

    You need to post the make, year, model, engine and transmission type. Many of such symptoms are a result of specific problem that specific range of models are susceptible to.

  3. #3
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    Default Re: Experience at driving, slipping tranny and stalling engine

    Oh, sorry. Guess I need to add that to my sig string?

    96 ford e250 econoline cargo van. Extended body, automatic 4 speed with OD, inline 6 gas 4.9l. No ac, just ps and pb.

    I think it may have a band adjustment, but I would think with 199 thousand miles on it, its likely SOL.

    The engine was rebuilt at 22 thousand miles ago. The mechanic at work told me it was the throttle idle thingie. I tried to unplug it and sure enough it dropped to the stalling speed. I had hoped if I unplugged it at high idle at startup it would stay open in thet position, than drop off.

  4. #4
    Flashaholic* rycen's Avatar
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    Default Re: Experience at driving, slipping tranny and stalling engine

    It sounds as you might need a TPS (throttle position sensor)

  5. #5
    Flashaholic* Morelite's Avatar
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    Default Re: Experience at driving, slipping tranny and stalling engine

    Quote Originally Posted by rycen
    It sounds as you might need a TPS (throttle position sensor)
    or the idle air control valve

  6. #6
    Flashaholic* snakebite's Avatar
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    Default Re: Experience at driving, slipping tranny and stalling engine

    fix the idle problem first.
    if it drops too low the pump in the transmission will not produce enough pressure to stay in gear.
    and flush out that lucas additive asap!.
    my olds will do that in the summer with the ac on if the isc gets stuck.
    i have seen the idle drop to 130 rpm at times.
    the oil,alt lights come on and the transmission goes to neutral.spec is 550 in gear.
    if you have 200k on a 4r70w its gonna need a rebuild soon but idle speed is more likely.
    that thick snot in a bottle is for delaying the inevitable.i doubt your trans needs it.

  7. #7
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    Default Re: Experience at driving, slipping tranny and stalling engine

    Actually I think even the 1996+ Ford trucks use EEC-V engine management, so this problem is easily diagnosed.

    Is the CHECK ENGINE light on? If so, get yourself a copy of a Haynes or Chilton manual and a generic code reader. The code reader plugs into a port, and on Fords it's under the dash to the driver's left. It looks like a big serial port, except it's made of plastic. Your code reader may be powered by the port, but even if it's not the key needs to be in the ON position (engine not running).

    You can read the code numbers off your code reader and look them up in the Haynes/Chilton.

    There are a million different OBD-II code readers out there... use your judgment when selecting one. If you can get one that's Ford only it'll probably have the proprietary codes and not just the standard SAE codes.

  8. #8
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    Default Re: Experience at driving, slipping tranny and stalling engine

    Quote Originally Posted by cobb

    I also discovered an annoying habbit of my engine cutting off at every other stop sign or light. I just shift it to nutral as I coast and put it back in gear at the light. I unplugged the temp sender for the engine and air intake and that seems to limit it. I know I wont know of an over heating situation and may burn more gas, but I hate to spend any more money for another reason.


    So?
    Cobb,

    if US cars work the same way euro cars do, I´d recommend visiting a dealer / mechanic who can plug his laptop to your OBD-interface.

    Dunno about cost on your side of the pond, but most dealers over here are willing to do this for free if given a small tip

    I´d bet one of your sensors ( engine temp, intake temp, throttle rheostat, lambda sond ) is misbehaving, making your carb / fuel-injection electronics run in "fail-safe"-mode.

    OBD logs will give away which sensor is defective.

    Seth

    P.S.: I guess you checked the "usual suspects"?

    - gap size on spark plugs
    - clogged air filter
    - leaking vacuum-hoses
    - valve-train needs adjustment ( if your engine has no hydro-lifters )
    Last edited by Seth; 05-17-2006 at 05:38 AM.
    On the light side of life

  9. #9
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    Default Re: Experience at driving, slipping tranny and stalling engine

    I drove it hard through the county today and it was fine. I wuzzled through the city and yup, it did it twice. Once going over a bump seemed to trigger it.

    I out accelerated everyone at every light to 45 with no slip. I wuzzle from block to block and VROOOOM, it will just coast then catch when it starts to rev back down. I try not to VROOOOM it as that leads to tire squealing and a sudden thumb throughout the body.

    Yeah, its terminal I am thinking, considering the miles on it and age of truck chassie. I just want a quick and easy fix to milk it along. Can I adjust the bands or unplug something to make the computer revert to a default setting, like cold warm up mode or something? I dont want to spend more than a hundred bucks for a fix, I rather sell it as is that needs work and a tranny.

    No warning lights unless it stalls, then I get the usual cluster for oil, temp, amp, air bag, etc. No warning lights when running.

    The idle causing the slipping problems is interesting.... I notice today the two times it stalled and did not slip it seemed it chugged down in a lower gear and did not upshift like it is suppose to as I came to a stop. I basically stop twice now, once before the line and if the amp meter dips suddenly I let off the gas and re brake a foot later and it stays idling.

  10. #10
    Flashaholic* snakebite's Avatar
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    Default Re: Experience at driving, slipping tranny and stalling engine

    sticky tcc solinoid can cause stalling but that is more common with the gm trannies.it leaves the converter locked up and is like stopping in a manual without pushing in the clutch.

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    Default Re: Experience at driving, slipping tranny and stalling engine

    If you have an Auto Zone nearby, I believe they will read the codes for free.
    Gig'em!

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    Default Re: Experience at driving, slipping tranny and stalling engine

    Could it be that easy???? Just go down to autozone, borrow a scanner and get the fix on the screen?

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    Default Re: Experience at driving, slipping tranny and stalling engine

    Sounds like a TCC (torque converter control solenoid) in the trans. That will cause the stalling. Your auto acts like a manual without giving you a clutch pedal. If it's slipping, then there's more problems too.

    EDIT: ya I was beat to it.

  14. #14

    Default Re: Experience at driving, slipping tranny and stalling engine

    Quote Originally Posted by cobb

    I forgot to mention that when I got to 44 bucks with of gas, gas started to run out the front of the tank behind the drivers seat, so I quit pumping and it quit leaking.
    I'm going to go out on a limb here and mention that nothing matters except fixing that gas leak! You're gona die in a ball of fire and you're worried about it stalling? Perhaps some higher power is trying to tell you something...
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    *Flashaholic* IsaacHayes's Avatar
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    Default Re: Experience at driving, slipping tranny and stalling engine

    Kevin: Ouch! I didn't catch that. Good point! Didn't ford have a recall on their gastanks in trucks/etc leaking?

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    Default Re: Experience at driving, slipping tranny and stalling engine

    Seems like they all (Ford trucks) pump from one tank to the other to some degree.

    My 90 F350 was slow back to front. Dads 91 F150 is FAST from front to back.

    Dads tranny lost reverse yesterday. It is an E4OD and seems terminal. What a PITA!

    Of course how it's been driven has more than a little bit to do with it...
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  17. #17
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    Default Re: Experience at driving, slipping tranny and stalling engine

    OH SNAPP!!!!!!!!

    I dont know what the leak is, I am going to assume it was the over flow unless I find out otherwise.

    Gas tanks dont normally cause problems with pulling out into traffic like slipping trannys do. If I pull out into oncoming traffic and it slips without catching, I may have to deal with, if I have a gas leak. Regardless, Ive assumed gas will leak as most tanks have a few hoses, not to mention the large diameter hose that connects it to the exterior of your car to pump it in. You cant compress a liquid, so that gas has to go somewhere and not many cars are equipped with fuel cells.

  18. #18

    Default Re: Experience at driving, slipping tranny and stalling engine

    The ONLY vent for a gas tank vents to the filler tube. If you look underneath you'll find the main filler hose has a smaller hose running parallel to it. This smaller hose is the vent. The vent hose terminates in the filler tube above where the end of the fuel nozzle would be when inserted into the vehicle. Overfilling should cause gas to spill from the filler tube receptical only. Everything else should be air tight. A leak ANYWHERE means you have a dangerous leak that should be fixed yesterday. Seriously man, this could be ka-boom, game over, no more flashlights.


    Cheers.
    Got Biodiesel?

  19. #19

    Default Re: Experience at driving, slipping tranny and stalling engine

    A 96+ vehicle applies vacuum to the tank to control hydrocarbon evaporation emissions, which is why the CHECK ENGINE light should come on if you haven't tightened the cap fully. There obviously should not be any gas leaks ever for any reason in a modern car because that could produce literally more emissions than 500 new cars, and then what would be the point of having emission controls?

    If you have a massive vacuum leak through the tank (are you sure the CHECK ENGINE LIGHT hasn't burned out from being on permanently?) the engine will tend to stall at idle and any vacuum modulator for the tranny (if there is one) will always think you are at WOT and shift funny.

    So fixing the tank first may solve more than just the "venting with flame" problem.

  20. #20

    Default Re: Experience at driving, slipping tranny and stalling engine

    BFG- Forgot about that, my bad.
    Got Biodiesel?

  21. #21
    *Flashaholic* gadget_lover's Avatar
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    Default Re: Experience at driving, slipping tranny and stalling engine

    With the modern cars the array of sensors directly effect everything. An open vacuum hose or disconnected sensor will make it do strange things.

    My 92 Ford F150 blew a fuse in the spedo once, and the silly thing would not upshift till it hit red-line. Even then it shifted with a bang as if I had manully shifted and popped the clutch at high RPM.

    The OBD will probably tell you where the problems are.

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  22. #22
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    Default Re: Experience at driving, slipping tranny and stalling engine

    Thanks guys, no I really mean it. You wont believe how easy it is to drop a partly filled 55 gallon tank in the parking lot in a high crime area with limited hand tools and no alt transportation on the weekends to get parts, etc. If I had the money to go to a shop, I would of bought something in better condition.

    Yes, the check engine and about 7 other idiot lights work when the engine stalls or when I first turn the key. All but the air bag light does out when I crank up, then the air bag light goes out a few seconds later.

    I upped the idle and unplugged the idle regulator. Seems to be a big improvement. Now it only stalls when shifting from Drive to Reverse with no pause for nutral. No slipping the short test drive, but the idle us up, so I basically accelerate by letting off the brake, not hitting the gas like before.

    I ran my hand over top of the gas tank and did not feel anything. Any number of things could of caused it to leak when filling. Maybe there is a leak in the over fill hose? Maybe I am suppose to stick the gas nozzle all the way into my tank than 1/4 the way?

  23. #23

    Default Re: Experience at driving, slipping tranny and stalling engine

    if i was closer id fix it for ya dude ya just by the parts and feed me a burger or something.im way to ppoor to by the parts my self sadly
    LED's have gotten too bright in our stuff. Many nights I'm awakened by my modem lights blinking.had help with my sig thank you for your help.

  24. #24
    Flashaholic* ABTOMAT's Avatar
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    Default Re: Experience at driving, slipping tranny and stalling engine

    If you keep driving this thing around in a deteriorating condition it'll only get more expensive to fix when the time comes. And if the gas leak gets worse you could catch fire. Problems don't get better with time. I'd be seriously trying to find out what's cauing the stalling _and_ what's leaking. Get some help and find better place to work on it. Although I'm still questioning the choice of a cargo van as a low-budget daily driver.

    I've never paid (or could afford to) more than $999 for a car, so I think I can sympathize with your situation. I drove my 1990 Mazda with a gas leak for two years, but it was in the (pre-OBD) emssions line so it wasn't an issue unless you filled it over 80%. But I should have fixed it much earlier--by the time it got really bad the tank fittings wouldn't come apart on their own.
    Do something alone and it's weird, do it with others and it's a club.

  25. #25
    *Flashaholic* PlayboyJoeShmoe's Avatar
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    Default Re: Experience at driving, slipping tranny and stalling engine

    A simple OBD code check at Autozone or whatever parts store you've got might tell a LOT about what's going on!

    For gas leakage only when filling I'd look closely for cracked hoses or loose hose clamps!

    If my Dad drove more like I do, his tranny wouldn't be dead now. But only when the truck pumps gas from the front to the rear and he isn't paying good attention does it leak any gas.

    OH! On my old '90 F350 the throttle position sensors ONLY job was to tell the E4OD what to do. I thought I had a dying tranny, but a new TPS made it work great. PERHAPS the TPS is similarly important in a gas vehicle?
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  26. #26
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    Default Re: Experience at driving, slipping tranny and stalling engine

    Honestly guys, if the gas tank was on the same side of the car as the exhuast system and outside the frame rails, I would try my best to fix it. Since it only leaked when filling up and hasnt since, its on the back burner. Like PB said, the leak maybe else where and as Ive said its not a concern if its parked. It is parked at this point, I am back to taking the bus.

    PB, I may take it out Friday to apply and rent a tranny jack and use the code tool on it from said store.

    ABTOMAT, the price and time was right. I was horrible at driving my dads car that had two bad ball joints a tie rod and wanted something to get some road time for my license. (He was unaware he had that problem and since had it fixed) Second it was big, white and has an air bag. I thought it was in a bit better shape than it is and thought the bigger the better on the road. Its a 3/4 ton truck chassie under the van body.

    My plans are mixed at this time on what to do. If I can find a cheap junkyard tranny, I will take it home and fix both problems. THe tank and tranny. Just jack it up and do one, then the other. If the tranny is as much as another used car, its going for sale or trade for a newer car. So far, a brief net search shows rebuilt trannys arent cheap.

    If I get a second job, its going for trade for a yaris, scion xb, kia rio, carolla, vw diesel or some other small car,van,truck for less than 10 grand new or slightly used with warranty.

  27. #27

    Default Re: Experience at driving, slipping tranny and stalling engine

    Cobb,

    Seriously, the gass leak is what you need to worry about. Remember, just because you don't "see" it leaking when sitting parked on level ground, does not mean it is not leaking. Vehicles pitch up/down/left/right and go up/down hills that cause gas to splash out while you are driving, not to mention the motion of the gas itself.

    Give some real thought to having the tank replaced. You really can't fix it without welding to it, which requires some real precautions such as completely draining/flushing the tank. And even then to prevent problems with explosive vapors it should be filled with water as much as possible. Replacement is usually easier and cheaper; got to be some serviceable (not leaking) ones in the junk yard. Around here, some of the yards will do the work for you for a reasonable fee.

    And as others have mentioned, as strange as it sounds, it might fix the preceived trany problem also. I had a Chrysler van sputter, jerk and start to die constantly in fron of the Phoenix airport of all places. Replacing the gas cap completely fixed the problem. Never under estimate how interrelated systems might be in modern vehicles.

    Bottom line - fix the leaking gas problem. You're messing with fire here and Summer is coming; what may not have been hot enough to ignite the leaking gas fumes yesterday, might just get hot enough to do it tomorrow when it's a little warmer out.
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  28. #28
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    Default Re: Experience at driving, slipping tranny and stalling engine

    I have a lot of sony gear I love and hate - mostly love.

    I have been a repair tech for consumer stuff

    and for the test and mesurement industry

    sony's stuff is as good as any one elses - in the same price point any way.

    man I really have a bad spring cold - I should go back to bed - I hope I make sense.

  29. #29
    *Flashaholic* PlayboyJoeShmoe's Avatar
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    Default Re: Experience at driving, slipping tranny and stalling engine

    Maybe you should Markdi!!! I don't see what the above post has to do with this subject!

    I think Lambda has a VERY VERY reasonable idea up there!

    Check it out and get it fixed... I think you (Cobb) are nearly as important around here as Raggie!!!!
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  30. #30
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    Default Re: Experience at driving, slipping tranny and stalling engine

    fortune cookie say slipping tranny need golfshoes..

    ok, I'm sorry..

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