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April 25th, 2008, 04:56 PM
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coilpack/ harness help
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...
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Gino T. Rinaldi Grinaldi@wi.rr.com 'Haulin Ass with Class!' 87 GN 52k miles, 11.40@121 (10's soon, 3 years in the making) 2005 Pontiac GTO 6spd. Cyclone Gray Metallic AZPS 550bhp package, 480 RWHP on pumpgas  FOR SALE1997 Acura 3.5 RL Daily Driver - Black, of course.     
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April 25th, 2008, 07:02 PM
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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
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85GN, TA33C Turbo, ported and matched intake and heads, 42.5 lbs blue stripe injectors, Poston exhaust headers, Hooker high flow 2 1/2 exhaust, Walbro 340 fuel pump hot wired, test pipe, 2 1/2 inch integrated downpipe(no turbo elbow), F-Body rad. dual ramchargers, 87 ECM-Turbo tweak chip, Razor Alky kit. Scanmater, 87 MAF, BLM of 128 at idle. Trans oil cooler with a 2800 stall conv with lockup, oil cooler. Mickey Thompson drag radials. Ported throttle body. HRPARTSNSTUFF motor mounts. Powerlogger with wide band o2 sensor.
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April 25th, 2008, 07:06 PM
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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.
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Gino T. Rinaldi Grinaldi@wi.rr.com 'Haulin Ass with Class!' 87 GN 52k miles, 11.40@121 (10's soon, 3 years in the making) 2005 Pontiac GTO 6spd. Cyclone Gray Metallic AZPS 550bhp package, 480 RWHP on pumpgas FOR SALE1997 Acura 3.5 RL Daily Driver - Black, of course.
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April 25th, 2008, 07:10 PM
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I think it is time for to me check out and move on from this forum. Take care and good luck. Brad
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85GN, TA33C Turbo, ported and matched intake and heads, 42.5 lbs blue stripe injectors, Poston exhaust headers, Hooker high flow 2 1/2 exhaust, Walbro 340 fuel pump hot wired, test pipe, 2 1/2 inch integrated downpipe(no turbo elbow), F-Body rad. dual ramchargers, 87 ECM-Turbo tweak chip, Razor Alky kit. Scanmater, 87 MAF, BLM of 128 at idle. Trans oil cooler with a 2800 stall conv with lockup, oil cooler. Mickey Thompson drag radials. Ported throttle body. HRPARTSNSTUFF motor mounts. Powerlogger with wide band o2 sensor.
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April 28th, 2008, 03:12 PM
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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.
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Eric Fisher OEM Parts Specialist for GM Vehicles 86 Grand National 85 Riviera T-Type 84 Riviera T-Type 82 Regal 455
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April 29th, 2008, 05:01 AM
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Quote:
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..
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84 Regal T type Dark blue inside and out. no power options. GTA wheels with 245/50/16 Fuzion tires see it here http://www.myspace.com/derrikmc
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April 29th, 2008, 09:09 AM
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Quote:
__________________
85GN, TA33C Turbo, ported and matched intake and heads, 42.5 lbs blue stripe injectors, Poston exhaust headers, Hooker high flow 2 1/2 exhaust, Walbro 340 fuel pump hot wired, test pipe, 2 1/2 inch integrated downpipe(no turbo elbow), F-Body rad. dual ramchargers, 87 ECM-Turbo tweak chip, Razor Alky kit. Scanmater, 87 MAF, BLM of 128 at idle. Trans oil cooler with a 2800 stall conv with lockup, oil cooler. Mickey Thompson drag radials. Ported throttle body. HRPARTSNSTUFF motor mounts. Powerlogger with wide band o2 sensor.
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May 7th, 2008, 12:44 AM
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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
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