1997 Ford Escort help meeeee ??

1997 FORD ESCORT
92,000 MILES • 4 CYL • 2WD • MANUAL
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BIKERCHRIS6801
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hi guys i have a ford escort p reg (1997) 1.6 lx and its driving me crazy!!! when i first got it it wouldnt tick over so i fitted a idle control valve thing on it and that dun the trick for that ... then when i went on motorway and go to accellerate (after about an hour and a half) i go to accelerate and then it holds back and just wont deliver the power and sounds very much like backfiriing but its not backfiring?? i changed the coil pack as told by various people and it still done it so i changed ht leads (yet again) and put brand new spark plugs in ... will i ever see the end to this problem?? i dont know what to do next with it :( hope you can help ...
Dec 2, 2009 at 2:59 PM
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DOCFIXIT
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Check fuel pressure need 35-40 psi
Dec 2, 2009 at 3:42 PM
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BIKERCHRIS6801
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that has been checked and is fine .. is there anything else it could possibly be i had it on a engine management computer but had to force a connection through(this is at my raf camp) so probably not the most hi tech of equiptment... and it had no faults stored on the car ... i have an inducvtion kit (which i will remove once i get my new air box sorted and i have a straight through exhaust from the cat back ... do i need more back pressure or anything like that? (when i first had the car there was a little resister in the airflow tube ... not the air flow meter a little more up than that before the air flow meter ) hope i can sort this out soon :) thanks for your help or suggestion :) it seems to have a flat spot its been described as ??? hope this helps
Dec 9, 2009 at 3:40 PM
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DOCFIXIT
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Are O2 sensors hooked up and operating? At least 2 psi of backpressure is good.
Dec 10, 2009 at 9:09 AM
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BIKERCHRIS6801
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ok .. where do i find them 02 sensors and do i test them or replace or???? should i plug it into another engine management system diagnostics or something and see if anything comes up ?
Dec 11, 2009 at 12:57 PM
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DOCFIXIT
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One in exhaust manifold other in exhaust pipe near CAT. A scanner will read O2 operation or put volt meter on orange/black wire at O2 in maniflod and gray wire on O2 after CAT. Meter on Mvdc scale should see 500 to 1000MV and changes as throttle is opened and closed.
Dec 11, 2009 at 3:49 PM