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Steve Wright
Dodge Dakota
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8/14/2002
11:18:11
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 Subject: Stalls when warmed up
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Message:
I have a 93 Dakota 5.2L 4WD with 120,000. The oxygen sensor is 3 months old, and that is when I cleaned the throttle body. No Check Engine light.
It starts fine when cold. Once warmed up, the idle is very rough and the engine stalls. I can get it moving by adding throttle, and once moving it is fine. When the RPMs drop below 800, it will stall.
I was guessing that the Coolant Temperature Sensor might be giving the computer the wrong impresion, but the more I looked at Chiltons, the less confident I am in this quess.
Any suggestions?
Steve
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WallyR
Dodge Dakota
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8/14/2002
11:28:58
| RE: Stalls when warmed up
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You might have a bad EGR valve if so equipped. We had two 318's do the same thing at around 100K miles. Ran fine cold, probably from idle enrichment.
Wally
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Sigma
Dodge Dakota
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8/14/2002
18:25:59
| RE: Stalls when warmed up
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Steve, First check for stored codes in the computer, then try resetting the computer & see if it idles ok...My 93 3.9 had the same problem & would idle fine with the reset. It straighten itself out after about 5 resets of that computer. It took the computer anywhere from 150 to 750 miles to relearn & the stalling would occur again....My o2 sensor was 1 year old & I replaced the temp sensor out of routine maintence (136k then).
Been running fine & I still am trying to find the cause before it happens again....I was leaning towards the o2 sensor but held back replacing it due to it's age & price....Look at the sensors used running cold (mode 2)& hot(mode 3)...
Keep us posted....
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