K reg escort 1.4 CVH

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Mon 9 Sep 2002 13:55
K reg escort 1.4 CVH - Mr T J Smith
Hello

A friend of mine has a 1.4 CVH single point injection escort. He has the problem that his car is very reluctant to idle. To date the following have been replaced:

stepper motor (with a scrap yard item)
map sensor
temp sensor.

Recent tests on a ford ecu computer showed no faults (s**s law played its part that day i'd suggest), but our questions lie mainly with the stepper motor given it's origins.

Has anyone had any experience with these engines? Any help will be well received!

Cheers

Tim

p.s. single point injection on a CVH engine is blatantly a bodge to pass the initial catalyst legislation.........
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Tue 10 Sep 2002 08:02
K reg escort 1.4 CVH - Edd
I had the same problem with my 1.4 escort lookers (bourght second hand from them) were unable or unwilling to take the blame and said they didn't detect any problems. The simple answer fort me was to buy a new car so the renault dealer has the problem now. I had tried fixing the engine with un plugging the battery and putting some adative to clean the engine out into the tank but nothing would fix it. I wouldn't recomend ignoring it as mine got the habit of stalling when it was idling as the revs got to low.
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Tue 10 Sep 2002 08:25
K reg escort 1.4 CVH - Adam Going (Tune-Up)
Tim,

Most common problem on Ford single-point systems is the Throttle Position Sensor (TPS), or Potentiometer as Ford insist on calling it, situated on the side of the throttle body unit at the end od the throttle shaft. This can be checked with a voltmeter, but an oscilloscope is best. Early (black) ones were very troublesome, later replaced with a red one.

The base idle speed (throttle position) may also need setting up.Switch ign on, hold throttle open, and gently push stepper motor rod back into unit. While it is fully withdrawn disconnect harness multi-plug to stepper motor. Release throttle and start engine. Base idle speed can now be set using small allen screw underneath throttle stop arm, setting to around 800rpm hot.

HTH, Adam
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