2000 Ford Ranger engine almost stalls

Tiny
MTGRIFFIN
  • MEMBER
  • 2000 FORD RANGER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 80,000 MILES
When sitting idle for a couple of minutes, the engine seems to either go into a very low idle to the point the engine almost stalls. It starts jumping around similar to as if it was missing. It started a couple of months ago and during this time some days are really bad and others I don’t experience it problem.

Replaced fuel pump, fuel filter and IAC the first time I brought it in shop about a month ago. The same shop has had it for four days this week and they have not been able to isolate the root cause of the problem.
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Friday, October 9th, 2009 AT 3:03 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Has the check engine light come on? Have they tested the throttle position sensor? Vacuum leaks?
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Wednesday, October 28th, 2009 AT 8:17 AM
Tiny
MTGRIFFIN
  • MEMBER
The check engine light has never come on. I'm not sure if they have tested the throttle position sensor or for vacuum leaks.

Since my last post, I replaced the plugs and wires and still had the same problem.

The shop replaced both of the oxygen sensors and that seems make things a lot better. It is not running perfectly and although I have not experienced the same degree of the problem the engine does hint that there is still an underlining problem.

Now I have a new problem that started the day I turned it in the shop last time. About half of the time I try to start the truck, it cranks but does not start. I have to waiting a few minutes and try again.
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Monday, November 2nd, 2009 AT 2:57 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
For the original problem, I would recommend checking for vacuum leaks. As far as the new one, it sounds like it could be the electronic engine control (EEC) relay. When this happens, I need you to listen to see if you hear the fuel pump run for a second when you first turn on the key. Also, if possible, check to see if there is spark to the plugs. If you need directions, let me know.

Joe
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Monday, November 2nd, 2009 AT 7:07 PM

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