1994 Ford Escort 94 Ford Escort idles too fast then stalls

Tiny
KRISBCRITTER
  • MEMBER
  • 1994 FORD ESCORT
Engine Performance problem
1994 Ford Escort 4 cyl Two Wheel Drive Manual 126k miles

HI THANKS FOR ANY HELPYOU CAN GIVE!
I've got a '94 Ford Escort Wagon LX, 1.9 motor, manual 5 speed with 126,000 miles on it.
THE PROBLEM: Currently, when started it revs up to 2.5kRPM and stays there for 2 minutes, then idle speed drops to 600RPM, runs rough, misses and then stalls unless you pump the gas. Once you give the engine gas it runs fine and drives normally.
Problem started gradually - it began to stall at traffic lights. At first I thought it was a vacuum leak (I'd had one on this car once before and new hose fixed it). So I replaced all the vacuum hoses. No improvement. I then replaced the ECG valve and plug wires and plugs. Still no change. I rented a diagnostic code reader from the auto parts store and it said that the IDLE CONTROL SENSOR and THE NEUTRAL SAFETY SWITCH were giving error codes. Being a cheapskape, I promptly went out to the used parts yard and pulled a used Idle Control Sensor and Electronic Computer from cars of same month and date of manufacture (4/94). Not one iota of difference. I couldn't locate the Neutral Safety Switch on any of the junked cars (and wonder if the manual transmission even has this?) So I didn't replace that The muffler has developed a hole. I wouldn't think that exhaust pressure would affect a car this much however. I did replace the fuel filter as well. I've read that a bad fuel pump could case a car to stall out, but the revving motor at startup doesn't make sense for that. THANKS!
- KB, Stuck in Minneapolis
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Saturday, July 25th, 2009 AT 11:25 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
There isn't a neutral safety switch, but there is a switch that requires the clutch to be in when started. I agree with you that it shouldn't have anything to do with this. I would, however, check the fuel pump pressure. It may be too high or low. The fuel pressure regulator may be bad causing different things like this to happen. Also, to me, it sounds like the throttle position sensor or idle air control valve, but you said there were no codes for that.

When you checked for vacuum leaks, did you check the intake?
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Saturday, July 25th, 2009 AT 10:17 PM
Tiny
ESCORTOWNER
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I'm having a similar problem After the car is warmed up and as long as the AC is off engine will sputter and die exactly 40 seconds after the gas pedal was last depressed. Once pressed it will take 40 seconds for it to sputter again. It does not actually switch off the idle goes so low as to not allow the engine to continue to run. I'm thinking Idle air control.

Escortwoner.
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Wednesday, August 19th, 2009 AT 3:52 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
You are correct. A standard doesn't have a neutral safety switch. As far as the problem, it sounds like an idle air control valve or throttle position sensor. Have you checked them?
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Wednesday, August 19th, 2009 AT 6:05 PM

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