Re: [AMC-List] starting trouble in 88 cherokee...4.0L

[farna@xxxxxxx]

Another possibility is dirty electrical connections. I had a "no start" situation with my 4.0L when I first installed it in my Rambler. I was getting sprak, but it was weak. The culprit was a slightly corroded connector to the ignition module. 87-90 Renix connectors are all TIN plated. There will eventually build up a little corrosion, especially if the thing has sat for a while (corrosion doesn't build up much when in use). Get some spray contact cleaner and pull EVERY connection, spray, and plug back up. Sometimes there is a good CPS but the connector is just corroded enough to weaken or change the impedence of the signal. You can't see the corrosion, but it's there!! I looked over mine, then took it to a small shop with a code reader. They spent a week on it (off and on, not constantly!) then finally charged me $100 -- after not finding out why it wouldn't run (they spent more than $100 worth of time on it though -- I wasn't unsatisfied). Then I took it to the local Jeep !
 dealer 
(this was 1999) who still had the Jeep/Renault specific diagnostic machine. He never hooked it up. I explained to the tech what all we'd tried, and he used a spark checking tool to check strength of spark. $65 later (their minimum charge) it was running!! 

--
Frank Swygert
Publisher, "American Motors Cars" 
Magazine (AMC)
For all AMC enthusiasts
http://farna.home.att.net/AIM.html
(free download available!)

-----original message----------------------------
Message: 2
Date: Mon, 18 Sep 2006 09:27:56 -0400
From: "Savage, Pete" <PSavage@xxxxxxxxxxx>
Subject: Re: [AMC-List] starting trouble in 88 cherokee...4.0L
To: <amc-list@xxxxxxxxxxxx>


Change or test your crank sensor.  

My bets is that it is toast...

Peter

-----Original Message-----

having starting trouble in cherokee...have fire going to coil but nothing coming
out of coil...also no fire going to injectors !! are there any fuses for
computer brain...any help greatly appreciated..thanx amc people you have been
you have been a great resource over the years...javelin@xxxxxxxxxxxx  
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