Question about Ford E-150

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1993 Ford Van Econoline 150 w/5.8 engine. When slowing down, turning on A/C, or turning, van idles badly and sometimes quit, when cool runs perfectly, 1/2 hr driving it idles badly. To try to solve problem they replaced: vaccum line,EGR 102 position sensor, eletical fuel pump, EGR valve, TRS sensor, gasket, Air control valve, coolant temperature sensor. Our mechanic took it to the ford dealer and they could not find the problem. Can you help?

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  • dmadrid002 Jul 31, 2008

    idle was set higher to no avail . . . can anyone else help?

  • dmadrid002 Jul 31, 2008

    Darlord 1: I forgot to mention when driving, stopping on the gas at a higher speed it runs fairly good, it's when I slow down to stop, turn, etc it's starts to idle badly and sometimes quit. Is your solution the same with the above information.

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One of the problem with IDLE on this VAN 5.8L
If you have Chenged the IAC." Idle air control valve."
I recomend Chenge the TPS.
After you changed. you need to return the IDle screw at normal position. If not .. you will still have the same problem..

And replace the MAP.." Manifold pressure sensor"

And letme know if work. I'm sure it's work.

Posted on Jul 31, 2008

  • Juan Guillen Jul 31, 2008

    If you refer to my. solution.

    The informtion you gave .

    I can say. is all related with the MAP and TPS.

    The TPS is on throttle body.

    THe MAP. is at right side of engine compartment. on top of the

    A/c housing. with a electrical connector. and 1 vacuum hose.

    Check the vacuum in the hose....

    Replace the. PCV. if is OLD.

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Try changing the throttle body position sensor, or the ideling screw. , Service the fuel injection system (injectors and filter) have the gas tank washed as there could be rust paricles in it. and if that fails you will need to have an engine job done. Chances are the pistons are worn out or the rings are bad.

Other possible causes are the torque converter or the transmission itself, However if it coccurs with the ac, it means that it happens when extra stress is on the engine. This is caused by eighter the fuel system or the engine itself.

Posted on Jul 30, 2008

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  • Rishi Roshan Ali Jul 30, 2008

    Personally i believe there is rust in the tank. When you say after a 1/2 hour when you let it cool, what is actually happening is the ruct particles in the tank is settling, so it will work,



    When you turn the ac on / of, extra gas is injected into the system, therefore the rust particles get shot in as well, clogging the injectors and giving the stalling. This will not show up in any dioagnostic and no one will ever find the problem..



    Trust me its rust particles in the tank.

  • Rishi Roshan Ali Jul 30, 2008

    thats the fuel tank

  • Rishi Roshan Ali Jul 30, 2008

    To verify this you can take the fuel; pump out and push you have inside the tank and feel around. you should feel the dregs. Pls note, b;eading the gas wont show any particles unless the car is being shaken up. Take the fuel pump out and sitckj your hand inseide thats the best way to check.

  • Rishi Roshan Ali Jul 31, 2008

    yes



    at a faster rate, more fuel is needed , although there are particles because of the extra fule you wont really notice it.

  • Rishi Roshan Ali Jul 31, 2008

    To verify its the fuel tank rust, remove the pump and stick you hand inside then tank and you will feel the particles resting at the bottom. Once the tank is washed and recoated, clean the hoses, change the filter and service the injectors. This will solve your problem.



    If it was a sensor (throttle body postion sensor or the Mass Intake Air Flow Meter(sensor)) thius will show up on a diagnostic, which would have been done eighter by the machanic or the motor company. Thant just leaves the fuel system, and the culprit is the tank. You may contact your machanic with this information and hear what he has to say.

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Its idle speed may be raised adjusting throttle screw.

Posted on Jul 30, 2008

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