Distributor-Module-cables that go to them problems some one help?
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New User
Joined: Oct 2008
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Distributor-Module-cables that go to them problems some one help?
My electric cables that go to my module connected to my distributor were exposed slightly, causing the engine not to start when the truck was already warmed up. For ex, if i go get gas and then shut my truck off it wont start right back up again. I put electric tape around the wires to and it seemed to be working. I came to find that when those wires get hot they impair the EFI. I am going to insulate the wires better so it will be a lot better. I think i need a new module or maybe a new cables, or distributor but im not really sure what the problem could really be. Anyone know what might be the problem?
Lead Driver
Joined: Sep 2002
Posts: 9,182
Likes: 12
From: Gateway to the West
Run both a KOEO and KOER test and see what codes you are getting first. This will keep you from chasing things that it MIGHT be. If the harness wiring at the TFI module and SPOUT connector are damaged I would suggest checking the local boneyards for a suitable replacement. I keep connectors and sections of wiring harness from parts trucks for this reason. Buying the harness connectors new is all but impossible and if you can find them they are ridiculously expensive.
Once you have run the diagnostics tests, you can determine where the problem is based on the codes you get. Check here for answers about how to perform the tests and what the codes mean.
Once you have run the diagnostics tests, you can determine where the problem is based on the codes you get. Check here for answers about how to perform the tests and what the codes mean.
Posting Guru
Joined: Apr 2005
Posts: 2,018
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From: Longview, TX
You just got great advise from one of the best. Also, on harnesses, the ones for black modules and grey ones are different. Somewhere in the early 90's the black modules appeared for computer controlled dwell systems. It costs money to go to school...do you need a couple of grey modules?
Check all the grounds...expecially on fender next to the battery.
Be sure to pull the continuous memory codes also.
What year, engine and is the ICM mounted on the distributor or is it remote mounted on the fender? The wires you found, the module itself and the stator inside the distributor could cause these symptons when warmed up.
Check all the grounds...expecially on fender next to the battery.
Be sure to pull the continuous memory codes also.
What year, engine and is the ICM mounted on the distributor or is it remote mounted on the fender? The wires you found, the module itself and the stator inside the distributor could cause these symptons when warmed up.
Last edited by b4hntn; Nov 6, 2008 at 01:36 PM. Reason: More thoughts...
Thread Starter
|
New User
Joined: Oct 2008
Posts: 12
Likes: 0
You just got great advise from one of the best. Also, on harnesses, the ones for black modules and grey ones are different. Somewhere in the early 90's the black modules appeared for computer controlled dwell systems. It costs money to go to school...do you need a couple of grey modules?
Check all the grounds...expecially on fender next to the battery.
Be sure to pull the continuous memory codes also.
What year, engine and is the ICM mounted on the distributor or is it remote mounted on the fender? The wires you found, the module itself and the stator inside the distributor could cause these symptons when warmed up.
Check all the grounds...expecially on fender next to the battery.
Be sure to pull the continuous memory codes also.
What year, engine and is the ICM mounted on the distributor or is it remote mounted on the fender? The wires you found, the module itself and the stator inside the distributor could cause these symptons when warmed up.
Thread Starter
|
New User
Joined: Oct 2008
Posts: 12
Likes: 0
Run both a KOEO and KOER test and see what codes you are getting first. This will keep you from chasing things that it MIGHT be. If the harness wiring at the TFI module and SPOUT connector are damaged I would suggest checking the local boneyards for a suitable replacement. I keep connectors and sections of wiring harness from parts trucks for this reason. Buying the harness connectors new is all but impossible and if you can find them they are ridiculously expensive.
Once you have run the diagnostics tests, you can determine where the problem is based on the codes you get. Check here for answers about how to perform the tests and what the codes mean.
Once you have run the diagnostics tests, you can determine where the problem is based on the codes you get. Check here for answers about how to perform the tests and what the codes mean.
Lead Driver
Joined: Sep 2002
Posts: 9,182
Likes: 12
From: Gateway to the West
Click the Check here link in the original post, here in this post, or grab a copy of a Haynes manual for your '89. The procedures are described pretty well in both locations.
FYI, KOEO = Key On Engine Off, KOER = Key On Engine Running
FYI, KOEO = Key On Engine Off, KOER = Key On Engine Running
Thread Starter
|
New User
Joined: Oct 2008
Posts: 12
Likes: 0
Click the Check here link in the original post, here in this post, or grab a copy of a Haynes manual for your '89. The procedures are described pretty well in both locations.
FYI, KOEO = Key On Engine Off, KOER = Key On Engine Running
FYI, KOEO = Key On Engine Off, KOER = Key On Engine Running
