Question about 1994 Ford Thunderbird

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1994 ford t-bird starts fine but surges and check engine light on

When you give it gas runs ok but when your stopped idles low and battery goes low and when your not on the gas it surges a little bit

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  • Anonymous Mar 23, 2014

    1991 telstar

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Have you checked the vacum lines under the hood for cracks in the lines or a vacum leak, sounds to me its a vacum leak.

Posted on Jun 18, 2009

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Posted on Jan 02, 2017

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My 2005 Ford Focus won't stay running unless my foot is on the gas. It starts just fine & the check engine light is NOT on. What could be causing this?


It is likely that the engine management system has lost its base line calibration. If the battery is weak and during the crank to start the voltage dipped low enough the Engine Control Module lost its calibration. If the pedal is depressed during the crank the TPS (Throttle position sensor) will lose the idle position for the throttle. The hunting and surging and resultant stalling is the ECM seeking out the limits and re-establishing the throttle idle plate location.

If battery is OK than running the car allowing the calibration of the vehicle to reestablish itself will correct the problem. My experience is that this happens if the gas pedal is depressed during crank with a very very low battery voltage. Always the best way is to not touch the pedal during any cranking starting procedure. Or after a battery replacement.

To accelerate the calibration process attempt to run the car ingear tring not to allow the car to stall. After afew munites the car will have reestablished its normal running calibration and you will be allset.

Nov 28, 2015 | 2005 Ford Focus

2 Answers

Idles roughly, then low when stopped or in park, then dies. Decreasing gas mileage. Slow to accelerate


Sometimes that's caused by a vacuum leak near the manifold area.

Sometimes air in the coolant will cause an idle problem. Air will keep the air temp sensor from sending proper info.
Hope this helps.

Jan 03, 2014 | 2004 Ford Taurus

1 Answer

2001 ford escape.. oil light comes on when at a stop and in drive. when i give it the gas the light turns off. i checked my oil,brake,coolant and tranny fliuds and are all fine????? no funny sounds????


this light is indicating your engine has low oil pressure sensed at idle, have the oil pressure checked with a special mechanical oil gauge, if the oil pressure checks ok then just replace the oil pressure sending unit, do this ASAP, if u do really have low pressure u can damage the engine bearings, a very expensive fix.

Mar 19, 2010 | 2001 Ford Escape

1 Answer

Engine Dies in Idel


being a certified mechanic has its advantages. there are multiple causes for that problem: lack of air or lack of fuel.
make sure the air filter is mostly clean.
check throttle plate (where air filter tube goes into motor), most likely black with soot and carbon. clean with tooth brush and gas, wipe off with clean rag. repeat ultil CLEAN.
low air flow past plate when closed (idle) will cause stall condition.
dirty throttle body is a common problem with lots of cars. causes engine stall.

dirty fuel filter will also cause this problem.. low fuel pressure at idle.

I also believe that your car is equipped with an idle air control valve. (regulates a bypassed air flow to motor at idle) this valve may be stopped up or non-functional. have local shop take a look, but there are ways to check valve if you consider yourself mechanically inclined

May 21, 2009 | 1994 Ford Escort

1 Answer

Cruise causes surging, vehicle does jerky lurching


Get a good alternator not a cheap one.

Apr 21, 2009 | 1999 Isuzu Rodeo

1 Answer

ROugh idle


there are 2 things that usually cause this, one is a dirty intake idle control valve and the other is hard engine mounts, I would say that both most likely apply to your car. try cleaning the intake with the following procedure from Ford.
Here is the most common cause of surges and stalls and low idle rough idle, it is the idle speed control air-bypass valve and throttle valve (IAC for short), they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Feb 18, 2009 | 1994 Ford Probe

1 Answer

Car stalls


TRY THIS PROCEDURE I DEVELOPED.

Here is the most common cause of surges and stalls and low idle, it is the idle speed control air-bypass valve and throttle valve (IAC for short), they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Nov 09, 2008 | 1994 Ford Thunderbird

1 Answer

1995 ford escort idle problem


The IAC valve is usually the problem with the 1.9 Escorts ,causing a very poor engine idle at a stop. It is located on the side of the throttle body .

Aug 18, 2008 | 1993 Ford Escort 4 Door

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