2000 Ford Ranger engine almost stalls

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.

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,709 POSTS

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

MTGRIFFIN

MEMBER
2 POSTS

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.