CF Veteran
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I was just going to bite the bullet and replace sensors, but after testing them with the meter I am hesitant
Right on. One thing at a time. Replace the ignition items you mentioned and if that shows no improvement move on.Originally Posted by jg22
will do, thanksI was just going to bite the bullet and replace sensors, but after testing them with the meter I am hesitant
well here goes nothing. NAPA was out of plugs so I had to go to advance to pick some up. The only champion copper plugs they had were 0.036, will that make a difference?


CF Veteran
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Nice collection there. Santa came early...Originally Posted by jg22
well here goes nothing. NAPA was out of plugs so I had to go to advance to pick some up. The only champion copper plugs they had were 0.036, will that make a difference?
Are the plugs RC12ECC (438)? Hope so.
I don't want to be picayunish, but I like to be. The plugs are to be gapped to .035". Use a cat whisker type gap gauge to check them, not those coin looking POS things.
CF Veteran
Make very sure you get the plug wires going to the correct spark plugs. Transfer them from the old cap to the new cap in exact order/length.
CF Veteran
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Nice collection there. Santa came early...
Are the plugs RC12ECC (438)? Hope so.
I don't want to be picayunish, but I like to be. The plugs are to be gapped to .035". Use a cat whisker type gap gauge to check them, not those coin looking POS things.
Are you refering to a "feeler gage" ? If so they are cheap. I think I paid around $6 for a setOriginally Posted by CCKen
Nice collection there. Santa came early...
Are the plugs RC12ECC (438)? Hope so.
I don't want to be picayunish, but I like to be. The plugs are to be gapped to .035". Use a cat whisker type gap gauge to check them, not those coin looking POS things.
CF Veteran
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Not feeler gauges. Cat whiskers are those hook like wire gauges. Sears sells them. Originally Posted by drhoward1988
Are you refering to a "feeler gage" ? If so they are cheap. I think I paid around $6 for a set
http://www.sears.com/kd-tools-spark-...&blockType=G14
My set are very old and are nearly falling apart. I may have to buy a new set.
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Yep just finished and yes those are the plugs that I bought. I did the ECU reset after as well. Originally Posted by CCKen
Make very sure you get the plug wires going to the correct spark plugs. Transfer them from the old cap to the new cap in exact order/length.
No real change. Idled for a minute or so then stumbled and died like before.
CF Veteran
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No real change. Idled for a minute or so then stumbled and died like before.
It sounds like it's running out gas, right?Originally Posted by jg22
Yep just finished and yes those are the plugs that I bought. I did the ECU reset after as well. No real change. Idled for a minute or so then stumbled and died like before.
Fuel pressure?
I still have it in the back of my mind that the CMP is bad but Didn't know of a good way of testing it.
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Fuel pressure?
I still have it in the back of my mind that the CMP is bad but Didn't know of a good way of testing it.
Yep that's exactly what it sounds like. I haven't checked the pressure yet, will do tomorrow. Originally Posted by CCKen
It sounds like it's running out gas, right?Fuel pressure?
I still have it in the back of my mind that the CMP is bad but Didn't know of a good way of testing it.
I just got back from taking it for a little drive. This time started right up and took off smoothly. Drove it a few miles around town and it seemed to do fine. Came to a stop sign and it started to stumble again. Took off and drove for a bit then it stumbled and died. Took a couple times to start it back up, drove fine, then stumbled again, then it stopped, then it would randomly start stumbling again. SOMETIMES it seems like giving it a little gas will get past the stumble for the time being. I've tried to figure out certain circumstances it stumbles in, but really it is completely random.
Went for a ~20 min drive and it drove perfectly. Idled in line waiting for pizza for a good 10 min and no stumbling. Idle isn't 100% perfect but not bad at all. Went and put gas and the jeep started right back up and drove perfectly again. Then I turned down my street.... Stumbled and died. What gives...
Member
Yeah thats frustrating as hell. Let us know how the fuel pressure looks.
If the fuel pressure checks out OK and you decide to replace the crank position sensor, when you install the new one make sure the wires don't come near the exhaust manifold. I've heard of guys discovering the wires half melted.
If the fuel pressure checks out OK and you decide to replace the crank position sensor, when you install the new one make sure the wires don't come near the exhaust manifold. I've heard of guys discovering the wires half melted.
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If the fuel pressure checks out OK and you decide to replace the crank position sensor, when you install the new one make sure the wires don't come near the exhaust manifold. I've heard of guys discovering the wires half melted.
Plan of action today will be to check the fuel pressure. If that checks out good then I'm thinking check grounds and wires? Then CPS?Originally Posted by Turbocube
Yeah thats frustrating as hell. Let us know how the fuel pressure looks.If the fuel pressure checks out OK and you decide to replace the crank position sensor, when you install the new one make sure the wires don't come near the exhaust manifold. I've heard of guys discovering the wires half melted.
CF Veteran
When you changed your cap and rotor did you check for play in the distributor shaft?
This is an item in the '99 diagnostics manual for P1391.
This is an item in the '99 diagnostics manual for P1391.
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This is an item in the '99 diagnostics manual for P1391.
Yep it was solid, no playOriginally Posted by CCKen
When you changed your cap and rotor did you check for play in the distributor shaft?This is an item in the '99 diagnostics manual for P1391.