Help! Rpm goes low and jeep turns off
Thread Starter
Newbie
Joined: Oct 2014
Posts: 16
Likes: 0
From: BROWNSVILLE, TEXAS
Year: 1999
Model: Cherokee
Engine: 4.0
Help! Rpm goes low and jeep turns off
I have been having this problem. The Jeep turns on perfectly, as soon as I put in drive, the RPM goes to 0 and the Jeep turns off. It turns on again with no problem but it still does the same once i put it in drive. When i come to a stop (while still in drive) I have to be pressing the accelerator and the brake in order for the Jeep not to turn off. I also smell fuel, but I have not found any leaks. I need help and guidance please.
1999 Jeep XJ 4.0
4.5 rough country
32s bfg ko2
1999 Jeep XJ 4.0
4.5 rough country
32s bfg ko2
No, I don't lick fish.
Joined: Mar 2011
Posts: 11,169
Likes: 26
From: Northern Kentucky
Year: 1999
Model: Cherokee (XJ)
Engine: 4.0
Wait.. so you can still drive it in this condition? Do the RPMs drop all the time when you put it in gear or do the only drop if you don't have your foot on the gas?
At first I was thinking torque converter, but now I think it's a fuel pressure issue. There's either a pinhole leak in the line, the regulator, the rail, or at the injectors.
At first I was thinking torque converter, but now I think it's a fuel pressure issue. There's either a pinhole leak in the line, the regulator, the rail, or at the injectors.
Thread Starter
Newbie
Joined: Oct 2014
Posts: 16
Likes: 0
From: BROWNSVILLE, TEXAS
Year: 1999
Model: Cherokee
Engine: 4.0
Wait.. so you can still drive it in this condition? Do the RPMs drop all the time when you put it in gear or do the only drop if you don't have your foot on the gas?
At first I was thinking torque converter, but now I think it's a fuel pressure issue. There's either a pinhole leak in the line, the regulator, the rail, or at the injectors.
At first I was thinking torque converter, but now I think it's a fuel pressure issue. There's either a pinhole leak in the line, the regulator, the rail, or at the injectors.
Only when i let go of the accelerator.
No, I don't lick fish.
Joined: Mar 2011
Posts: 11,169
Likes: 26
From: Northern Kentucky
Year: 1999
Model: Cherokee (XJ)
Engine: 4.0
Check your fuel pressure at the injection rail using a fuel pressure tester. Can rent one from the auto parts store if you don't have one.
CF Veteran
Joined: May 2015
Posts: 4,481
Likes: 18
From: Arizona
Year: 97
Model: Cherokee
Engine: 4.0
No, I don't lick fish.
Joined: Mar 2011
Posts: 11,169
Likes: 26
From: Northern Kentucky
Year: 1999
Model: Cherokee (XJ)
Engine: 4.0
CF Veteran
Joined: May 2015
Posts: 4,481
Likes: 18
From: Arizona
Year: 97
Model: Cherokee
Engine: 4.0
Another one would be a smartphone app that lets you lay the back of your phone against a wire to measure Amp draw. lol
Have you checked out the new bluetooth/phone code readers yet? My buddy just bought one and it is cool as heck. Corresponding laptop ware and all for like $45.00.
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No, I don't lick fish.
Joined: Mar 2011
Posts: 11,169
Likes: 26
From: Northern Kentucky
Year: 1999
Model: Cherokee (XJ)
Engine: 4.0
You know the old saying..."There's an app for that!" lol
Another one would be a smartphone app that lets you lay the back of your phone against a wire to measure Amp draw. lol
Have you checked out the new bluetooth/phone code readers yet? My buddy just bought one and it is cool as heck. Corresponding laptop ware and all for like $45.00.
Another one would be a smartphone app that lets you lay the back of your phone against a wire to measure Amp draw. lol
Have you checked out the new bluetooth/phone code readers yet? My buddy just bought one and it is cool as heck. Corresponding laptop ware and all for like $45.00.
No, I haven't yet. I need to get one for my wife's car. My Jeep is OBD1 so it wouldn't work in it. I'm supposed to have a code reader shipped to me to test and review by some company that contacted me through here.
We'll see.
Senior Member
Joined: Nov 2014
Posts: 603
Likes: 1
From: Hacienda Heights
Year: 1990
Model: Cherokee
Engine: 4.0
Your primary focus should be on finding the source of the fuel smell, and it's possibly causing the stalling. Check the fuel pressure regulator vacuum hose for gas.
