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Unread 08-17-2013, 09:25 PM   #1
bobdeesr
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Join Date: Dec 2009
Location: Hudson Valley
Posts: 3
Emissions....I think!!!

My 2002 Jeep Grand Cherokee is acting up. specifically, it started out with a check engine light on. I replaced the TPS and the IAC valve. All that did was turn off the "Check engine light". I thought I solved my problem. The problem is once the car reacheds operating temperature (210 degrees), it start to act up. I could be driving 40 miles an hour, and all of sudden the tach goes from 2K to ZERO, and if I'm lucky it will recover, and I'l keep driving. Other times it will stall, and I have to restart it and keep going. Also, when I resume after stopping at a stop sign, it will completely stall.
Has anybody have experienced these problems, even after what I have already done? I appreciate your feedback, as I want to get back to enjoying my Jeep.

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Unread 08-18-2013, 11:55 AM   #2
Olese
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2000 WJ 
 
Join Date: Apr 2010
Location: Alabama
Posts: 165
I had a similar issue, got worse when it warmed up and it was the map sensor. Does it post an error code when you do the on/off 3 times thingy?
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Unread 08-18-2013, 12:00 PM   #3
bobdeesr
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Join Date: Dec 2009
Location: Hudson Valley
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No, when I installed the throttle position sensor and the idle air valve control, the check engine light went out. But I am still having the same characteristics
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Unread 08-18-2013, 12:01 PM   #4
bobdeesr
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Join Date: Dec 2009
Location: Hudson Valley
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I was thinking next the camshaft or crank sensors, but I don't want to keep dumping money into sensors with no results. But if that will fix the problem, I have no problem purchasing them
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Unread 08-18-2013, 12:16 PM   #5
Olese
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2000 WJ 
 
Join Date: Apr 2010
Location: Alabama
Posts: 165
Turn the key all of the way on and off 3 times leaving it on the last time. Read what it says on the odometer. If it says 'done', then it didn't find a code, otherwise an error code will appear.
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