Check engine light came on within a day of it idleing rough. Rather than idleing rough it sounds more like a putter coming through the exhaust.
The check engine light is telling you that something has gone wrong with the system. Have the codes read and fix the faulty sensors or parts.
SOURCE: 2000 ford expedition ,,rough idle in park..rough
Check the fuel pressure at the rail assembly, there should be a min of 40 lbs at the rails. Do you have any loss of power under a load? You may have an issue with your o2 sensor that is causing the ecm to send an improper signal to the engine ign/fuel map.
SOURCE: 98 E-250 Rough Idle; codes p0156,p1131,p1151,p0301,p0171,p0174+
po301 thru po306 all misfire codes cylinder 1-6 remove plugs and replace them..... set the plug gap first
i suggest u replace the wires also if they never been replaced all these misfire codes can set the others and one is for the oxygen sensor ( 02s or HO2S) CIRCUT MALFUNCTION do u know how to check wireing systems
do the tune up plugs (set gap) .052-.056 change the fuel filter also. clear the codes hows it run
this info is for 98 E-250 4.2Litre
what engine do u have 4.2L or 4.6L i know it is a v-6 by the codes
SOURCE: check engine light on running very rough
go to autozone for a free computer scan and get the fault code. Possibly one of the COPS, Coil on Plug. COde will tell you
SOURCE: 2001 v6 escape rough idle when cold
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.
SOURCE: 1998 Ford E-250. Rough idle/hesitating
Hi, since the check engine light (CEL) is on you need to get the trouble codes read. Most auto parts stores will do this for free. If there isn't one nearby, any shop should be able to read it (for a charge) or you could buy your own code reader.
The code(s) you'll get will be in the format PXXXX like P0171 or similar. Once you have the codes you can look them up here to get a description - http://www.obd-codes.com/trouble_codes/
Or post the codes back here and we'll help you out. The next step is to get those codes though so you know exactly which areas of the engine to concentrate your diagnosis efforts on. Good luck!
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