2002 wj won't start without using gas
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Newbie
Joined: Jan 2018
Posts: 4
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From: P.A
Year: 2002
Model: Grand Cherokee(WJ)
Engine: 4.0
2002 wj won't start without using gas
I bought a 2002 Grand Cherokee, limited, 4.0, and has about 160,000 miles. Most recently I've been having a problem starting it, usually the first start of the day, it will turn over but not completely start up unless you give it gas and keep it revved at about 2,000 RPMs for 30 seconds and then it will run fine. Usually after that initial start it will run good and sometimes it will go days without doing it again. I have been doing everything I can think of to try and fix it but I just can't figure out why it's doing that. Any help would be greatly appreciated. I have replaced numerous parts, new battery, cables, o2 sensors, spark plugs, tps sensor, idle air control valve, cleaned throttle body, fuel filter, air cleaner, coolent system flushed and filled, had alternator checked, fuel pump runs when key is turned, checked ignition switch with no sign of issues. Has anyone else had this issue? It also is an R title but this didn't start happening until about 6 months after buying it. Thanks in advance for any tips or suggestions
Senior Member
Joined: Feb 2011
Posts: 897
Likes: 2
From: NJ
Year: 2004 WJ, 1998 XJ
Model: Grand Cherokee(WJ)
Engine: 4.7 HO
I bought a 2002 Grand Cherokee, limited, 4.0, and has about 160,000 miles. Most recently I've been having a problem starting it, usually the first start of the day, it will turn over but not completely start up unless you give it gas and keep it revved at about 2,000 RPMs for 30 seconds and then it will run fine. Usually after that initial start it will run good and sometimes it will go days without doing it again. I have been doing everything I can think of to try and fix it but I just can't figure out why it's doing that. Any help would be greatly appreciated. I have replaced numerous parts, new battery, cables, o2 sensors, spark plugs, tps sensor, idle air control valve, cleaned throttle body, fuel filter, air cleaner, coolent system flushed and filled, had alternator checked, fuel pump runs when key is turned, checked ignition switch with no sign of issues. Has anyone else had this issue? It also is an R title but this didn't start happening until about 6 months after buying it. Thanks in advance for any tips or suggestions
Old fart with a wrench
Joined: Nov 2010
Posts: 14,398
Likes: 741
From: Manlius, east of Syracuse, NY
Year: 2000 XJ Sport & WJ Laredo
Model: Grand Cherokee (WJ)
Engine: 4.0L
I doubt it's a blown gasket without other indications like loosing coolant or steam from the tailpipe. Also weak compression in 2 adjoining cylinders.
It's fixable you know!
It's fixable you know!
Thread Starter
Newbie
Joined: Jan 2018
Posts: 4
Likes: 0
From: P.A
Year: 2002
Model: Grand Cherokee(WJ)
Engine: 4.0
Hope yours is different
That’s what is wrong with mine just had the cylinder back pressure tested and got bubbles in the radiator. Hopefully yours is something different but it looks like I get to do a head gasket good luck
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Beach Bum
Joined: Jul 2011
Posts: 6,123
Likes: 22
From: Cape Hatteras, North Carolina
Year: 2000 WJ
Model: Grand Cherokee
Engine: 4.0
2002 WJ? I would suspect a cracked cylinder head being the actual culprit.
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