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XJ Ask the Question Thread
CF Veteran
Join Date: Apr 2011
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Year: '99 and '91
Model: Cherokee
I'm thinking the check valve is gonna be back there in that "box" by the tank. I know there's no return line off the fuel rail.
CF Veteran
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Year: '99 and '91
Model: Cherokee
Or fix it if my tank starts leaking. I ain't dropping the damn tank for a check valve and a filter.
Moderator of Jeeps
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Location: Frederick, MD from Cleveland, OH
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Year: 1993 YJ Wrangler
Engine: 4.0 I6
CF Veteran
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Location: Mercer County, NJ
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Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Lol so true
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
check engine light is nice and brite
bought a 2000 2dr cherokee with engine light on changed plugs don't know how old they were but were gap at around .75-.80 restarted jeep
after plugs installed started right up next start 3 cranks before turned over. auto zone for codes shot 4 2 oxygen sensors trani speed sensor and maf? now seeking mechanics assistance. oh yeah it has 255,000 on 4.0 driveline is amazingly tight. first post not sure i'm in the right section sorry guys...
after plugs installed started right up next start 3 cranks before turned over. auto zone for codes shot 4 2 oxygen sensors trani speed sensor and maf? now seeking mechanics assistance. oh yeah it has 255,000 on 4.0 driveline is amazingly tight. first post not sure i'm in the right section sorry guys...
CF Veteran
Join Date: Sep 2010
Location: Mercer County, NJ
Posts: 12,692
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Received 4 Likes
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4 Posts
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
bought a 2000 2dr cherokee with engine light on changed plugs don't know how old they were but were gap at around .75-.80 restarted jeep
after plugs installed started right up next start 3 cranks before turned over. auto zone for codes shot 4 2 oxygen sensors trani speed sensor and maf? now seeking mechanics assistance. oh yeah it has 255,000 on 4.0 driveline is amazingly tight. first post not sure i'm in the right section sorry guys...
after plugs installed started right up next start 3 cranks before turned over. auto zone for codes shot 4 2 oxygen sensors trani speed sensor and maf? now seeking mechanics assistance. oh yeah it has 255,000 on 4.0 driveline is amazingly tight. first post not sure i'm in the right section sorry guys...
Also look into doing a radiator flush and check all other fluids. If the spark plug were that bad, no telling how long since and if any routine maintainence was ever done
CF Veteran
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Year: 1992 Cherokee Sport
Engine: Bone-Stock 242
bought a 2000 2dr cherokee with engine light on changed plugs don't know how old they were but were gap at around .75-.80 restarted jeep
after plugs installed started right up next start 3 cranks before turned over. auto zone for codes shot 4 2 oxygen sensors trani speed sensor and maf? now seeking mechanics assistance. oh yeah it has 255,000 on 4.0 driveline is amazingly tight. first post not sure i'm in the right section sorry guys...
after plugs installed started right up next start 3 cranks before turned over. auto zone for codes shot 4 2 oxygen sensors trani speed sensor and maf? now seeking mechanics assistance. oh yeah it has 255,000 on 4.0 driveline is amazingly tight. first post not sure i'm in the right section sorry guys...
Moderator of Jeeps
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Year: 1993 YJ Wrangler
Engine: 4.0 I6
Hopefully the cooling system has been maintained in his '00
CF Veteran
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Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Herp Derp Jerp
Join Date: Nov 2011
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Weeell if the gap was so large, it's plausible that all 4 of those codes are legit, but before you drop any dough on sensors check for wiring problems. Rodent damage and melting can cause that, along with corroded connectors.
DieselD I'm surprised you hadn't heard of that before. It's a weekly feature in this thread lol
DieselD I'm surprised you hadn't heard of that before. It's a weekly feature in this thread lol
CF Veteran
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Year: '99 and '91
Model: Cherokee
Lol. Well, if I don't know what people are talking about and it doesn't pertain to me, I tend not to comment and ask questions unless it sounds interesting. Check valves sound boring.