Question about Cars & Trucks
Wont idle runs really rough it will drive as long as i keep my foot on pedal as soon as I let up it dies. so far I have put a new distributer, new plugs and wires CRANK SENSOR, idle air sensor,. I even went to jeep and bought the crank shaft sensor from jeep?
The others have suggested the likely suspects, I would add be sure to check the EGR valve for proper operation. If it is stuck open it can cause these kinds of problems.
Posted on Jan 16, 2015
Look for a vacuum leak at the intake manifold. Spray (flammable) brake clean around the area while the engine is running and look for the idle to change. Also check for a vac leak at the brake booster by pinching the Vac supply line and see if the idle changes.
Posted on Feb 17, 2014
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Posted on Jan 02, 2017
Check your throtle postition sensor. It monitors what postion the throtle is at and sends that info to the ecm. It will go bad and cause that problem.
Posted on Feb 10, 2010
Check any rubber hose pieces between the PVC valve and the motor (intake). Normally a leaking hose will have a soft squishy area in the hose where the rubber is melting and the hose will create a vacuum leak at that point. You can tape over the squishy area with electrical tape (get it tight) and if it runs better you should replace the hose pieces. This leak will cause the motor to run very rough at idle, can cause the motor to race when starting it, can cause the vehicle to shift hard (when motor surges) and can throw scan codes indicating Lean Bank 1 AND Lean Bank 2 (presence of both codes is good indicator that vacuum leak is the cause).
Posted on Aug 06, 2010
If the ignition turns on and dies while driving, you might have a clogged idle air control valve. The valve is located in the throtle body, just below the air intake hose. Locate the idle air control valve, un plug the connector, unscrew it (you will need star screw driver) and next clean it using an electronic contact cleaner spray, I use 3M for that. Next, make sure all cleaning liquid inside is gone (it evaporates quickly) and re assemble it. This should solve your problem once for all.
Posted on Aug 11, 2010
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