I am at a loss, help please
11-04-2012, 05:14 PM
#16
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Year: 2000
Model: Cherokee
Engine: I6
Not the coil rail, not the CPS, Seacrap, MMO, Water etc will not help.
Coil rail will not set codes, CPS very rarely sets codes.
Injectors don't swap positions.
You have the typical symptoms of an intake vacuum leak - -- very popular on inline Jeeps.
Engine off - Blow cigarette smoke through a vacuum hose into the intake manifold, rag in TB.
Fix wherever it comes out!
Best of all - IT'S FREE!
Let us know!
Coil rail will not set codes, CPS very rarely sets codes.
Injectors don't swap positions.
You have the typical symptoms of an intake vacuum leak - -- very popular on inline Jeeps.
Engine off - Blow cigarette smoke through a vacuum hose into the intake manifold, rag in TB.
Fix wherever it comes out!
Best of all - IT'S FREE!
Let us know!
11-04-2012, 05:27 PM
#17
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Year: Several
Model: Cherokee
Engine: 4.0
LOL -- Just don't inhale! If Clinton can, you can!
Get creative - I use a turkey baster - I suck smoke from a cig with it, then blow it in the hose - usually 3 or 4 times is enough.
I quit smoking years ago when I had a severe heart attack, still big problems from it.
Get creative - I use a turkey baster - I suck smoke from a cig with it, then blow it in the hose - usually 3 or 4 times is enough.
I quit smoking years ago when I had a severe heart attack, still big problems from it.
Last edited by rrich; 11-04-2012 at 05:32 PM.
11-04-2012, 05:41 PM
#18
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Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
I dont have a distributor, i got the coil rail/pack, whatever it is called. its a 2000. but right now i dont have the check engine light. it just went away but the codes pulled last were the ones for misfires in 5 and 6 and random. right now its got a little rough idle, and no light (for now)
11-04-2012, 06:09 PM
#21
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Year: Several
Model: Cherokee
Engine: 4.0
LOL - A friend from Rumania saw me using my turkey baster/smoke test - I told him what I was doing.
He said "you aren't AMERICAN, you must be European - Americans buy expensive tools for things like that, we have to make our own!"
Wrong, I'm 6th generation American!
LOL -- I sold my smoke machine with my shop years ago.
He said "you aren't AMERICAN, you must be European - Americans buy expensive tools for things like that, we have to make our own!"
Wrong, I'm 6th generation American!
LOL -- I sold my smoke machine with my shop years ago.
11-04-2012, 06:15 PM
#22
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Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
I dont have a distributor, i got the coil rail/pack, whatever it is called. its a 2000. but right now i dont have the check engine light. it just went away but the codes pulled last were the ones for misfires in 5 and 6 and random. right now its got a little rough idle, and no light (for now)
11-04-2012, 06:53 PM
#23
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Year: 2000
Model: Cherokee
Engine: I6
LOL - A friend from Rumania saw me using my turkey baster/smoke test - I told him what I was doing.
He said "you aren't AMERICAN, you must be European - Americans buy expensive tools for things like that, we have to make our own!"
Wrong, I'm 6th generation American!
LOL -- I sold my smoke machine with my shop years ago.
He said "you aren't AMERICAN, you must be European - Americans buy expensive tools for things like that, we have to make our own!"
Wrong, I'm 6th generation American!
LOL -- I sold my smoke machine with my shop years ago.
11-04-2012, 08:23 PM
#25
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Year: 1997
Model: Cherokee
Engine: 4.0L
CPS did not fix mine.
So far....
CPS ( factory Mopar part ) ( kept old one for use as spare )
Injector O Rings, Sprayed Injectors with Throttle Body Cleaner, Cleaned Injector Holes
Full Tune Up : Plugs ( Champion), Wires, Cap & Rotor
Cleaned IAC
Cleaned Throttle Body
I have not done the smoke test ( incense also smoke alot )
Have ordered new TPS ( from dealer )
Not wanting to rain on your parade but these multiple misfires have got to be the most difficult for the at home mechanic to tackle.
Good Luck
So far....
CPS ( factory Mopar part ) ( kept old one for use as spare )
Injector O Rings, Sprayed Injectors with Throttle Body Cleaner, Cleaned Injector Holes
Full Tune Up : Plugs ( Champion), Wires, Cap & Rotor
Cleaned IAC
Cleaned Throttle Body
I have not done the smoke test ( incense also smoke alot )
Have ordered new TPS ( from dealer )
Not wanting to rain on your parade but these multiple misfires have got to be the most difficult for the at home mechanic to tackle.
Good Luck
11-04-2012, 08:35 PM
#26
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Join Date: Feb 2012
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Year: 2000
Model: Cherokee
Engine: I6
CPS did not fix mine.
So far....
CPS ( factory Mopar part ) ( kept old one for use as spare )
Injector O Rings, Sprayed Injectors with Throttle Body Cleaner, Cleaned Injector Holes
Full Tune Up : Plugs ( Champion), Wires, Cap & Rotor
Cleaned IAC
Cleaned Throttle Body
I have not done the smoke test ( incense also smoke alot )
Have ordered new TPS ( from dealer )
Not wanting to rain on your parade but these multiple misfires have got to be the most difficult for the at home mechanic to tackle.
Good Luck
So far....
CPS ( factory Mopar part ) ( kept old one for use as spare )
Injector O Rings, Sprayed Injectors with Throttle Body Cleaner, Cleaned Injector Holes
Full Tune Up : Plugs ( Champion), Wires, Cap & Rotor
Cleaned IAC
Cleaned Throttle Body
I have not done the smoke test ( incense also smoke alot )
Have ordered new TPS ( from dealer )
Not wanting to rain on your parade but these multiple misfires have got to be the most difficult for the at home mechanic to tackle.
Good Luck
11-05-2012, 01:52 AM
#28
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Model: Cherokee
no one i know smokes lol. any other ways to do it? my friends got a fog machine, would that work?
you could try spraying carb cleaner around the intake, vacuum lines, etc seeing if the idle changes.
Last edited by Radi; 11-05-2012 at 02:09 AM.
11-05-2012, 04:11 PM
#29
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Year: 2000
Model: Cherokee
Engine: I6
Originally Posted by Radi
Grab a good cigar, lol. You don't have to make a habit of it
you could try spraying carb cleaner around the intake, vacuum lines, etc seeing if the idle changes.