coilpack/ harness help

[GinoRin]

Got a call yesterday from a local with an 85 GN. Said he has a hard time starting his car, but he can wiggle the bulkhead connector on the coilpack and it'll start right up. He also said his digital dash always goes metric and he has to manually swich it back to MPH. Any ideas? Sounds to me like he has a bad connection in the bulkhead...

 

[BRAD_PADGETT]

Sorry but I cannot help you unless you provide more info. There is is no such thing as a bulkhead in an 85 GN. The coil pak has no outside wiring attached to it other than spark plug wires. Please provde useful info. God luck. Brad

 

[GinoRin]

Its been 10+ years since I worked on a hotair car, so I guess I'll have to get under the hood and look for myself. I thought the coilpacks were similar to the Intercooled cars.

 

[BRAD_PADGETT]

I think it is time for to me check out and move on from this forum. Take care and good luck. Brad

 

[turbofish38]

Two seperate issues IMO. Have your friend make sure that the nuts that hold the coilpack to the mounting brackets are nice and tight. Add them if they are missing. And the bracket needs to be nice and tightly bolted down on the engine. If he can jiggle the wires and it starts than I would suspect the connection is where the problem is at. Moisture gets in there so a good cleaning might be in order. Now if he is talking about the C100 connector on the firewall than he has got isuues I cant even begin to solve.

If the digital dash resets to default than it is the power processor in the digital cluster. You'd have to ship it off to Caspers to fix that one.

 

[novaderrik]

Sorry but I cannot help you unless you provide more info. There is is no such thing as a bulkhead in an 85 GN. The coil pak has no outside wiring attached to it other than spark plug wires. Please provde useful info. God luck. Brad

go easy on him- i think when he said "bulkhead connector" he was talking about where the harness plugs into the ignition module.
one thing to always check when weird electrical gremlins pop up is the ground side of things- GM cars from the 80's have a lot of grounds, and they tend to be pretty fragile. plus, they are over 1/4 of a century old now, so the grounds might not be at 100% any more. a bad ground could very well be the problem with the dash- or it might be like my T Type that had a loose connection where the gauge cluster plugged in that caused the alternator to not charge. 10 minutes with a pencil eraser fixed that problem..

 

[BRAD_PADGETT]

I think it is time for to me check out and move on from this forum. Take care and good luck. Brad

I do apologize for my remark concerning Ginorin's post. It was out of frustration with personal issues. I do feel that it is time for me to take a break. My car actually is tuned correctly and I am at 18 lbs. boost no knock on a stock turbo. At this point I have decided not to put on my new TA33C nor replace my body bushings. Put the cover back on and the trickle battery charger-this car will only be out for car shows. Take-care. Brad

 

[85mustangkiller]

having same trouble with my 85 gn. the wires for the connection were broken inside. so if i moved them around the car would start. let go and dead no spark