Question about Jeep Grand Cherokee

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1997 Jeep Grand Cherokee dies when it is first started up.

1997 Jeep Grand Cherokee, 6 cyl.

When the switch is set to defrost, and starting the vehicle up first thing in the morning or whenever it's been off for more than a few hours, it starts, chunders and dies out. It does not happen during the warmer months but get worse the colder it gets.

The RPMS bounce up and down between 250 to 750 at the point of starting and then the vehicle dies out. To keep it running we have to press on the gas and keep the gas pedal pressed to keep the vehicle at 750 RPMS until it has fully warmed up. It will then run with only minor rpm bouncing around 750 rpms.

It can also do this without the defrost being on, but only in the winter months.

We have brought it to three mechanics, one was a jeep dealership. This has been a problem for the past two years.

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  • biliedru Nov 12, 2009

    For that solution, would the check engine light be on? The check engine light is not on with this problem.

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  • 13 Answers

It is not rh defrost. sound like it is the tempeture sensor inop not telling the mass air flow sensor that vehicle is cold....

Posted on Nov 12, 2009

  • BODYSHOPMGR Nov 12, 2009

    does it have a mechinical choke that come's off the exhaust manifold?

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