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2007 Jeep Cherokee 3.7 L stuttering at 2000 RPMs rough idle replaced a lot of stuff
04-25-2020, 05:08 PM
#1
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Year: 2007
Model: Grand Cherokee (WK)
Engine: 3.7
2007 grand cherokee 3.7 L stuttering at 2000 RPMs rough idle replaced a lot
I replaced the throttle body
plugs
coil packs
injectors
map sensor
knock sensors
unhook the battery for 24 hours
Fuel pressure good
she runs fine until it gets up temperature sound like a starving for oxygen, when it idles rough I pull the hose from the brake booster it will smooth out the idle.
Under small load at 2000 RPMs you little stutter about 3000 RPMs she takes off here is a video can somebody help please.
This is a video of my Jeep running like crap at 2000rpms the light comes on and then at 3000rpms she runs amazing
plugs
coil packs
injectors
map sensor
knock sensors
unhook the battery for 24 hours
Fuel pressure good
she runs fine until it gets up temperature sound like a starving for oxygen, when it idles rough I pull the hose from the brake booster it will smooth out the idle.
Under small load at 2000 RPMs you little stutter about 3000 RPMs she takes off here is a video can somebody help please.
This is a video of my Jeep running like crap at 2000rpms the light comes on and then at 3000rpms she runs amazing
Last edited by Rob Vandemark; 04-27-2020 at 09:25 AM. Reason: spelling add video links
04-27-2020, 08:11 AM
#2
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Location: Lost in the wilds of Virginia
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Year: 1998 Classic (I'll get it running soon....) and 02 Grand
Model: Cherokee (XJ)
Engine: 4.0
2007 Jeep Cherokee 3.7 L
You have a GRAND Cherokee. It's not a variant of a Cherokee, it's a completely different vehicle.
04-30-2020, 08:15 AM
#3
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Year: 2007
Model: Grand Cherokee (WK)
Engine: 3.7
Found it my O2 sensor bank one was causing all the issues
I replaced the throttle body
plugs
coil packs
injectors
map sensor
knock sensors
unhook the battery for 24 hours
Fuel pressure good
she runs fine until it gets up temperature sound like a starving for oxygen, when it idles rough I pull the hose from the brake booster it will smooth out the idle.
Under small load at 2000 RPMs you little stutter about 3000 RPMs she takes off here is a video can somebody help please.
This is a video of my Jeep running like crap at 2000rpms the light comes on and then at 3000rpms she runs amazing
https://youtu.be/fDgcnRcpHyU
plugs
coil packs
injectors
map sensor
knock sensors
unhook the battery for 24 hours
Fuel pressure good
she runs fine until it gets up temperature sound like a starving for oxygen, when it idles rough I pull the hose from the brake booster it will smooth out the idle.
Under small load at 2000 RPMs you little stutter about 3000 RPMs she takes off here is a video can somebody help please.
This is a video of my Jeep running like crap at 2000rpms the light comes on and then at 3000rpms she runs amazing
https://youtu.be/fDgcnRcpHyU
04-30-2020, 08:17 AM
#4
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Year: 2007
Model: Grand Cherokee (WK)
Engine: 3.7
Fixed
The dammm o2 Sensor bank one. It fouled out all my plugs. I cannot get to the sensor or get it out. I cut the wires and Wala she runs smooth now. I will eventually have a new one installed but for now it’s great to see the old girl run like a new car.
04-30-2020, 12:05 PM
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Year: 1998 Classic (I'll get it running soon....) and 02 Grand
Model: Cherokee (XJ)
Engine: 4.0
I don't know where your O2 sensor is located, but you always want to use heat to remove one. Either drive the vehicle for 30 minutes, or use a torch around the bung. Also, a special O2 sensor socket is highly recommended to avoid rounding it off and creating a nightmare.
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