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Old Aug 23, 2010 | 10:59 AM
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Originally Posted by paykoman86
I got Grand Cheeroke Laredo 2001, 4.0L with 112,000 miles on it.
I JUST GOT IT and right away I'm struggling with this problem---> Random misfire !! Some times it starts to run normally for a short moment like nothing happened.
I tried most of the possible things already.
Spark pLUGS COIL PACKS,wires, pressures, fuel.
Car was at 2 diffrent shops and they couldn't come up with anything, so I took it to the Dilership.
After blaming the fuel and charging me $150 for draining & refilling -Dilership wants me to buy a new ECU for a $1000 with labor but they said that thay dont guaranty it will stop the problem(???), found a shop that gived me price of $350 for a refurbished one with new programing etc... is it the same ??
I know the car was previusly severely ovER HEATED, and not rally taken care of
(sorry for my English, its my 2nd language & its my first forum LOL) thanks for any help and advice
where are you from? have you tried to replace the cps?
Old Aug 23, 2010 | 11:00 AM
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Originally Posted by BUELLIGAN
I need power steering fluid , DEX2 trans fluid, What are U guys using ??
Old tranny fluid.
Old Aug 23, 2010 | 11:03 AM
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no, no smoke at all.... For all I know is that it is idling fine (despite the noise/knock), just bounce a bit between 0 and 500 rpm and always looks like it is going to stall.
I put some 91 grade fuel in it and it does look like it is helping a bit... but might just be a placebo effect
I have run a compression test and apparently I have 2 low ones (5 and 6).
I mean it is a 23 yo jeep with 200K on it, I am not expecting it to run like a newer one, just trying to make it as good as posisble
Old Aug 23, 2010 | 11:12 AM
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Originally Posted by woodnut_jeep
have you tryed to put the old injectors back in?
you have to mach the same flow rate of the renix injectors, the HO injectors will not work unless you re-map the map sensor.
Old Aug 23, 2010 | 11:16 AM
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Originally Posted by Steph74
no, no smoke at all.... For all I know is that it is idling fine (despite the noise/knock), just bounce a bit between 0 and 500 rpm and always looks like it is going to stall.
I put some 91 grade fuel in it and it does look like it is helping a bit... but might just be a placebo effect
I have run a compression test and apparently I have 2 low ones (5 and 6).
I mean it is a 23 yo jeep with 200K on it, I am not expecting it to run like a newer one, just trying to make it as good as posisble
Ok, did you remove the throttle plate from the TB? if yes you must put it back on in the same exact way it was before, if you notice the plate has chamfered edges and matches with the TB bore. If you don't get to have it right, with some pliers slightly bend the throttle lever where it rests on the adjust screw (don't even try to turn it, it won't) until you get the right idle.
Old Aug 23, 2010 | 11:17 AM
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Originally Posted by westcoast
does anyone know why my jeep makes a popping/puff noise when trying to fire it up? it turns over but doesnt start
could be everything dude, find out wether it is spark or fuel.
Old Aug 23, 2010 | 11:19 AM
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I have not removed the plate, but I will definitely check that tonight ....
Just to confirm, if I am able to adjust the TPS with the voltmeter and it stays stable, then I can be sure that it is not faulty right ?
Thanks man...

(by the way you're Italian right ? where are you from in Italy ?)
Old Aug 23, 2010 | 12:48 PM
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Originally Posted by fantic238
Honestly, i don't see any connection between a bad alternator and a tranny shifting problem. If the battery is good the tranny should work even if the alternator was disconnected.
yeah it definitly WASNT the alternator,and the tranny was decalred fine,....so you think i should pursue this wiring/charging system angle?
also if im facing my engine from the front on the left hand side almost in the middle about halfway down is a sensor coming out,cant find it in my manual..whats it called? also it seems theres only one wire coming out of it ...does that seem right
Thanks
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Definitly glad Stefano's back too.hope your vacation was well
YOU THE MAN MAN!
Old Aug 23, 2010 | 04:31 PM
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I have a 2000 Jeep Cherokee Classic. My problem is, while I'm driving the odometer & speedometer either drop to 0 or they independently go up & down. Sometimes the seat belt light goes on. The car doesn't register any code for this problem.
Any ideas, my mechanic can't find anything wrong.
Old Aug 23, 2010 | 10:47 PM
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Originally Posted by fantic238
If you don't get to have it right, with some pliers slightly bend the throttle lever where it rests on the adjust screw (don't even try to turn it, it won't) until you get the right idle.
That worked for me.... thanks for the tip
The throttle cable is really lose too is that normal ?
Old Aug 24, 2010 | 02:15 AM
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Originally Posted by Steph74
That worked for me.... thanks for the tip
The throttle cable is really lose too is that normal ?
no, it should have little play.
Old Aug 24, 2010 | 02:21 AM
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Originally Posted by #999
yeah it definitly WASNT the alternator,and the tranny was decalred fine,....so you think i should pursue this wiring/charging system angle?
also if im facing my engine from the front on the left hand side almost in the middle about halfway down is a sensor coming out,cant find it in my manual..whats it called? also it seems theres only one wire coming out of it ...does that seem right
Thanks
P


Definitly glad Stefano's back too.hope your vacation was well
YOU THE MAN MAN!
That is the oil pressure sender and it has only one wire.
Old Aug 24, 2010 | 02:22 AM
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Originally Posted by Steph74
I have not removed the plate, but I will definitely check that tonight ....
Just to confirm, if I am able to adjust the TPS with the voltmeter and it stays stable, then I can be sure that it is not faulty right ?
Thanks man...

(by the way you're Italian right ? where are you from in Italy ?)
Right.
Old Aug 24, 2010 | 02:26 AM
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Originally Posted by csm3700
I have a 2000 Jeep Cherokee Classic. My problem is, while I'm driving the odometer & speedometer either drop to 0 or they independently go up & down. Sometimes the seat belt light goes on. The car doesn't register any code for this problem.
Any ideas, my mechanic can't find anything wrong.
What happens if you hit the dash? Try to unplug the connectors and clean them.
Old Aug 24, 2010 | 06:29 AM
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Originally Posted by fantic238
That is the oil pressure sender and it has only one wire.
only 1 wire ,cool....so as far as my other problems though....how would you say to check the charging system to see if thats the reason my volts jump up to 20 when under a hard shift?...alternator and battery are fine....could it be wires coming to or from them?..
thanks again stefano.....
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