ZJ Flashing Check Engine then Dying - Page 3 - JeepForum.com

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post #31 of 35 Old 05-09-2013, 02:50 PM Thread Starter
JohnCrabtree
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1994 ZJ 
 
Join Date: Mar 2013
Location: Sonora
Posts: 314
Dealer**** confirmed that I need a new PCM. They quoted us $1,134 but i think that includes the $200 that we owe them for the diagnosis today.

My psych teacher said that he replaced his 98 grand wagoneer pcm with a napa pcm and the second one worked perfectly for ~$400. Any comments? I don't think we're going to spend $1,000 on my jeep as we have $2,000 into it and it's qorth around $2500 according to carfax.

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post #32 of 35 Old 05-09-2013, 05:32 PM Thread Starter
JohnCrabtree
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1994 ZJ 
 
Join Date: Mar 2013
Location: Sonora
Posts: 314
Looks like I'm picking up a PCM from oriellys tomorrow.

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post #33 of 35 Old 10-22-2013, 10:47 PM Thread Starter
JohnCrabtree
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1994 ZJ 
 
Join Date: Mar 2013
Location: Sonora
Posts: 314
So, I picked up a PCM. Worked perfectly for a while, then started having small issues again (Wouldn't have noticed it if I hadn't known what it was doing before). I've been driving my dad's 2007 Nissan Titan for school because of these issues but I am sick and tired of driving "Daddy's truck". I want my own vehicle back. Not to mention that I am going to a trade school for diesel and industrial mechanics and every day I learn something I want to do it on my jeep (Like when I learned how to properly check U joints or rebuild differentials, etc). Also, I can do my own alignments and use the school's lifts and tools and such (within reason, has to match curriculum or on open shop days).

I'm going to pull all the grounds and clean them/tighten them down. I'm also going to go ahead and zip tie the PCM connector to the PCM to keep constant pressure (as many others have done). I've replaced the TPS and PCM. The throttle body is sparkling clean. The throttle cable is tight at the throttle body, It's not a bad throttle cable though. It's definitely an electrical issue. I'm just wondering where all the grounds are? I've done some quick google and jeepforum searches and haven't found much information on it. I would like to pull them all and clean them all just so I know that they are all good.

Oh and here is a pic of my throttle body.
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post #34 of 35 Old 10-22-2013, 10:48 PM Thread Starter
JohnCrabtree
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1994 ZJ 
 
Join Date: Mar 2013
Location: Sonora
Posts: 314
She is a 94 Laredo with a 5.2 under the hood. Not sure if the grounds are different between engines/trims.
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post #35 of 35 Old 10-24-2013, 10:46 PM Thread Starter
JohnCrabtree
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1994 ZJ 
 
Join Date: Mar 2013
Location: Sonora
Posts: 314
Still looking for ground locations if anyone knows...

Someone must know?

I checked chilltons and it's not listed. I'll check allData tomorrow at school and see if they have it.
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