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lenny johnson
Dodge Dakota
JOIN HERE
9/15/2010
05:27:23
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 Subject: Ign. control mod. and ecm
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I suspect my ICM is givin me fits. I understand it is in the ecm. I need to know if you can get a new icm and replace it. Or does anyone have a ecm fo a 92 dakota w/3.9. Yours truly, JUSTA DEAD CYL. (earlier post I made)
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dakota49
Gen I
9/15/2010
19:18:24
| RE: Ign. control mod. and ecm
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It sounds to me that maybe you need to check the connection just a few inches down from the "Power box" the fuse box under the hood, follow the wires down about 4-6 inches and untape the wires, there is a splice where I think 3 or 4 wires come together and it can cause all kinds of problems, I can't remember just what they call it on here, but there are a lo of posts about it on here. I would try that before I replace the computer. The way I understand it, it needs to be cleaned and reconnected, then retaped.
Good Luck
Dakota49
dakota49
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yea
Dodge Dakota
JOIN HERE
9/15/2010
21:17:22
| RE: Ign. control mod. and ecm
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He was told that in an earlier post, Said he checked
it and it was good.
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lenny johnson
Dodge Dakota
JOIN HERE
9/16/2010
03:37:57
|  RE: Ign. control mod. and ecm
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yes the splice is good. I have had the truck ten yrs and taken well care of it as well as the previous owner. it shows in the wiring where the splice is, clean as a whislte and tight. I gave the splice some tugs and wiggled all the wiring in that area on back to the firewall, even disconected the block from the fire wall to check corrosion. it all looks good. I even wiggled every damn wire under the hood while the engine was running. today the truck ran without a hint of a miss. check my earlier posts and you will see I have done just about it all. CONFESSION TIME, I am a retired 30 yr tech. and electrical is one of my strongest in the feild. I WILL NOT GIVE UP. someone here in town is parting out a 92 3.9 and tomorrow I am buying the throttle body with the Map, ais and t/p sensors for 20 bucks. can't go wrong, but that is all he has left other than an alt. BTW, with engine running my alt. output is 14.2 volts and a new batt. so we are good there. I'll keep ya posted becuase I WILL NOT GIVE UP. thanx everyone for any input so far
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Bob Lincoln
Dodge Dakota
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9/16/2010
08:19:48
| RE: Ign. control mod. and ecm
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I didn't see your other post, but I assume you checked the fault codes? What are the symptoms again?
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lenny
Dodge Dakota
JOIN HERE
9/19/2010
19:36:54
| RE: Ign. control mod. and ecm
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Here are the symptoms and my fixes. No codes, ever, no warning lights, only if I disconnect an injecter, then the check eng. lite comes on. Symptoms: no. 5 cyl. just dies when ever it feels like it. Ive done all the basics, comp. 120 dry, 150,000 miles on er'. This weekend I baought a throttle body off a motor with 60,000 miles. I changed the map sensor, thottle pos sensor, and ais motor. drove for about two blocks and # 5 died again. went three miles it came back on hitting on all six and it is still that way. always #5 and only #%. When dead, I took a new spark plug and and put it on #5 plug wire, started it up and of couse a misfore, but the plug had a good spark. swapped #6 injecter with #5. no diff. like I said #5 just drops, nothing, and only #5. When all six are firing, the truck runs like a dream.
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Bob Lincoln
Dodge Dakota
JOIN HERE
9/20/2010
08:23:44
| RE: Ign. control mod. and ecm
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Have you replaced the dist cap, wires and ignition rotor in the last 50K miles? If not, you need to.
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lenny
Dodge Dakota
JOIN HERE
9/20/2010
11:39:51
| RE: Ign. control mod. and ecm
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yep, done it all
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Bob Lincoln
Dodge Dakota
JOIN HERE
9/21/2010
08:31:47
| RE: Ign. control mod. and ecm
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Is compression the same as other cylinders?
Have you checked carefully to see if the spark plug heat shield is shorting out the spark? Did you try removing the heat shield?
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lenny
Dodge Dakota
JOIN HERE
9/21/2010
12:15:30
| RE: Ign. control mod. and ecm
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Message:
Hi Bob. comp. test showed 120 on that cyl. #1 was the lowest at 100. At night I looked for stray spark, none.
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