2000 Ford Explorer 2000 Ford Explorer idle problems

TTBRICKE

MEMBER
2000 FORD EXPLORER

Engine Performance problem
2000 Ford Explorer 6 cyl Four Wheel Drive Automatic

Electrical problem
2000 Ford Explorer 6 cyl Automatic

I have a 2000 ford explorer with a 4.0. I changed the idle air control valve, MAF, throttle positon sensor, checked for vacuum leaks, and had a complete tune-up. The truck idles at 3000 rpms and drives at 1500 rpms, I dont even have to push the gas pedal to drive 40 mph! What else could be causing this?

5 Replies

JACOBANDNICKOLAS

MECHANIC
109,644 POSTS

It could be other vacuum leaks like the intake. Has the check engine light come back on? If so, does it have a different code?

Let me know.
Joe

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Monday, March 15th, 2010 AT 10:37 AM

TTBRICKE

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Yes the check engine light is on, took truck to autozone and they said the code means I need an 0-e muffler. I think this is incorrect. I let the truck run for a few minutes and there was a puddle under the exhaust and water coming out of the exhaust. I also checked the oil and the level is really high and there isnt much coolant in the radiator. I now think it may be either a blow head gasket or intake gasket. What do you think? Its just funny that the first code said I needed an idle air control valve and now that thats changed all of these other problems are happening.

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Monday, March 15th, 2010 AT 7:48 PM

JACOBANDNICKOLAS

MECHANIC
109,644 POSTS

Does the oil look contaminated with coolant? As far as the code from A.Z, OE muffler, that is interesting. In the future, ask them what the code is and I'll look it up. THere is nothing that sets a muffler code.

As far as the engine, my first guess is the intake because of what is happening, but let me know about the oil.

Joe

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Monday, March 15th, 2010 AT 8:58 PM

TTBRICKE

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8 POSTS

The oil is a real dark brown, looks almost like melted chocolate, but it doesnt smell like antifreeze. Ill take it back to autozone to get the code.
Thanks.

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Monday, March 15th, 2010 AT 9:49 PM

TTBRICKE

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Also, the truck has plenty of power. It actually runs a lot better since the tune up. But, the major problem is that the idle is WAY too high, and I think coolant is getting into the intake, or maybe its the head gasket, just dont know?
Thanks.