Rough cold start, idles rough when warm
#1
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Year: 1997
Model: Cherokee
Engine: 4.0
Rough cold start, idles rough when warm
I think I have exhausted all options and would appreciate any other thoughts.
My 98 xj will idle very rough when it is cold. Almost dies, then once it warms up, idles & drives great.
Also, once it warms up, if I shut it off, after 15 mins, it will start the first time, die, and crank but not start til it cools down a bit.
The other day, it was warm, and idling for about 3-4 mins. Began to stall, and was about to die, when I opened the hood, and in about a minute, it began to idle smooth again.
I have changed the CPS, TPS, Coil, seafoamed, checked the IAC, checked fuel pressure, checked plugs, cleaned the TB, shielded injector #3...
I'm thinking maybe I have a faulty CPS.
Any other thoughts guys?
My 98 xj will idle very rough when it is cold. Almost dies, then once it warms up, idles & drives great.
Also, once it warms up, if I shut it off, after 15 mins, it will start the first time, die, and crank but not start til it cools down a bit.
The other day, it was warm, and idling for about 3-4 mins. Began to stall, and was about to die, when I opened the hood, and in about a minute, it began to idle smooth again.
I have changed the CPS, TPS, Coil, seafoamed, checked the IAC, checked fuel pressure, checked plugs, cleaned the TB, shielded injector #3...
I'm thinking maybe I have a faulty CPS.
Any other thoughts guys?
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Year: 1997
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#5
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Year: 1997
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Originally Posted by djlarroc
How do you get around? Wait til it cools before driving it again?
#9
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Year: 1997
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Anything that could be immediately affected by the cool air once I opened the hood? I thought that was odd and was able to replicate the same stalling/fix several times.
Mine will not even let me do that. Once it starts idling rough, I can floor it, and it will not make any difference. Just sputter and die.
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