Question about 2001 Ford Escort ZX2
The engine idols rough at when engine cold, once it warms up the engine runs fine?
SOURCE: truck runs rough
Sounds like one of your chambers isn't firing. Run your car for a few minutes, shut it off then pull your plugs one at a time and see if one of them is wet. Might just need a new plug.
Posted on Nov 28, 2008
what codes are present? If it is lean codes P0171/P0174 problem is most likely the orings leaking between upper and lower intake manifold if this is a 4.0L
Posted on Feb 11, 2009
It either has a vacuum leak or a dirty MAF. To test for vac leaks spray the engine with carb cleaner to see if the engine speed changes., if it does you fond the leak. The most common leak is pcv line coming straight off the back of the throttle body. Check there first. Also check to make sure there are no air leaks between the throttle body and the mass air flow. Don't replace the idle speed motor or the tps, they won't fix it. It is possible the o2 is the problem, but it usually isn't. P0107 Is usually always from the stuff i listed above.
Posted on Mar 01, 2009
To update my earlier repair on the 2001 6 cyl Escape: When cold, and when the ignition was turned over but no accelerator pressure given, the rough idle finally returned the P0303 code again when the check engine light came on indicating that it wasn't caused by the plugs or the coil. FYI, I had replaced the intake manifold gaskets during the original repair and just prior to that I had replaced the fuel filter which was very dirty (I cut it open to see).
The repair manual referred to fuel injectors as a possible problem. I have run three tanks of fuel using different injector cleaning products and am very pleased with the results. Cold starts are much smoother and I am unable to coax out the P0303 code or any other code.
My opinion, change the fuel filter, use a fuel injector cleaner for a couple of tanks, change the plugs if the problem still exists. The coils were not the problem on my vehicle.
Posted on Mar 09, 2009
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