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Tech Tips, Tech Questions / Re: '86 GT Won't start, help!
« on: July 26, 2017, 09:08:20 am »
The car stalled on a hill when the brake locked, when we tried to get it moving again the clutch blew. Too much resistance.
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2
Tech Tips, Tech Questions / Re: '86 GT Won't start, help!
« on: July 26, 2017, 07:45:18 am »
...... Jinxed myself, RF brake line collapsed going up a hill on it's first time out, brake locked and the clutch blew 
. Good thing I know how to drop a Fiero cradle..
. Good thing I know how to drop a Fiero cradle..
3
Tech Tips, Tech Questions / Re: '86 GT Won't start, help!
« on: July 24, 2017, 03:46:51 pm »
Thankfully all of this chasing problems around has led to my replacing most other things that could go wrong in the future and lots of spares. 
4
Tech Tips, Tech Questions / Re: '86 GT Won't start, help!
« on: July 23, 2017, 06:11:00 pm »
The problem has been found!
Decided to go back to basics and ignore what my helper and I have seen to this point, worked through everything before finally pulling the injectors that we had "cleaned" and attempting to put pressure through them independently with poor results. So poor in fact that these injectors are done for and need replaced, before I go about this though I've seen several mentions online of replacing the stock injectors with those from other vehicles. Is there a particular reason for this besides performance? I'm mostly going for the best fuel mileage I can get at the moment.
Decided to go back to basics and ignore what my helper and I have seen to this point, worked through everything before finally pulling the injectors that we had "cleaned" and attempting to put pressure through them independently with poor results. So poor in fact that these injectors are done for and need replaced, before I go about this though I've seen several mentions online of replacing the stock injectors with those from other vehicles. Is there a particular reason for this besides performance? I'm mostly going for the best fuel mileage I can get at the moment.
5
Tech Tips, Tech Questions / Re: '86 GT Won't start, help!
« on: July 16, 2017, 06:30:06 pm »
Injectors fire when manually grounded and attempting to start, the car even ran (horribly) for a few moments before the screwy fuel/air ratio shut it down.
Bad ECM or perhaps whatever sensors the ECM uses to control the fuel timing?
Bad ECM or perhaps whatever sensors the ECM uses to control the fuel timing?
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Tech Tips, Tech Questions / Re: '86 GT Won't start, help!
« on: July 16, 2017, 02:35:34 pm »
I should also note that this vehicle had various electrical uh.... "Modifications" that I've been working on restoring to the original configuration, at this point I think I've gotten them all but perhaps I missed one.
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Tech Tips, Tech Questions / Re: '86 GT Won't start, help!
« on: July 16, 2017, 02:29:45 pm »
We assumed it was getting fuel due to wet plugs, apparently not so though. Fuel pump is good and runs, block has good ground and the fuel filter is new. As I said I currently have no pulsing ground signal to the injectors from the ECM so I don't know if they function or not, going to attempt grounding D15 & D16 from the ECM manually to check if the injectors fire, if so then it should be a wiring problem I believe.
Timing is now correct as per the GAfiero tech tips, which is also how I realized my timing mark problem.
Timing is now correct as per the GAfiero tech tips, which is also how I realized my timing mark problem.
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Tech Tips, Tech Questions / Re: '86 GT Won't start, help!
« on: July 16, 2017, 12:00:52 pm »
Timing is now set properly and the car will run temporarily when fuel is introduced to the throttle body but not otherwise. I've double checked everything from the pump up to the injectors and it was all OK until I checked if the injectors were getting a ground signal from the ECM to fire, which they are not. Any advice on where to move on from there? I checked the ECM grounds and found that they had voltage to them when attempting to start, but am unsure if its simply a change in resistance.
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Tech Tips, Tech Questions / Re: '86 GT Won't start, help!
« on: July 14, 2017, 09:12:14 am »
Yes there has been some.... Much to my embarrassment it's a timing issue as I did not realize this crank has three timing marks on it. I'm now on the largest of the three but believe it to be 180 degrees off. I'll work on it this afternoon and update with results.
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Tech Tips, Tech Questions / Re: '86 GT Won't start, help!
« on: July 13, 2017, 06:49:01 am »
The brakes were locked up but the calipers have been rebuilt to resolve the issue, all fluids have been flushed and changed of course.
I should have been more specific with what I state previously, the braided grounding strap typically going to the head/block is not present, I didn't notice a strap on the transmission either. The ground to the battery tray is there though as I replaced it when I replaced the rusted out tray.
I should have been more specific with what I state previously, the braided grounding strap typically going to the head/block is not present, I didn't notice a strap on the transmission either. The ground to the battery tray is there though as I replaced it when I replaced the rusted out tray.
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Tech Tips, Tech Questions / Re: '86 GT Won't start, help!
« on: July 12, 2017, 08:45:42 pm »
Just checked and there is no grounding strap on the car at all, guess I know what I'm picking up tomorrow.
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Tech Tips, Tech Questions / Re: '86 GT Won't start, help!
« on: July 12, 2017, 08:23:16 pm »
Technically I got it in June but yes.
Ground straps are a very good thought that I'll double check on tomorrow, as far as I've seen though the only thing pointing to the car becoming a habitat was a long dried out wasp nest behind one of the rotors. The car was thankfully garage kept.
Ground straps are a very good thought that I'll double check on tomorrow, as far as I've seen though the only thing pointing to the car becoming a habitat was a long dried out wasp nest behind one of the rotors. The car was thankfully garage kept.
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Tech Tips, Tech Questions / Re: '86 GT Won't start, help!
« on: July 12, 2017, 07:39:48 pm »
Wet plugs
Havn't sniffed the exhaust...Yet.
Forgot to mention that the ICM has been replaced, neutral safety switch isn't an issue as its a 4 speed.
Havn't sniffed the exhaust...Yet.
Forgot to mention that the ICM has been replaced, neutral safety switch isn't an issue as its a 4 speed.
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Tech Tips, Tech Questions / '86 GT Won't start, help!
« on: July 12, 2017, 07:30:04 pm »
Hi everyone!
Recently picked up an '86 GT that has been sitting for 15+ years, a nice replacement for the '84 3800 swap I had 5-6 years ago. The car was not running when I got it but apparently ran fine when parked. After cleaning the fuel tank, lines, injectors, and fuel rail, plus replacing the fuel pump, fuel filter, fuel pressure regulator, spark plugs, plug wires, pickup coil, coil, distributor cap, and rotor I cannot get the car to start. It turns over great and I know that I'm getting spark and fuel, and that the timing is correct but the car just refuses to start. Is there some kind of quirk that the 2.8 has that I am not aware of? Any ideas or suggestions would be extremely welcome.
Thanks,
Thomas
Recently picked up an '86 GT that has been sitting for 15+ years, a nice replacement for the '84 3800 swap I had 5-6 years ago. The car was not running when I got it but apparently ran fine when parked. After cleaning the fuel tank, lines, injectors, and fuel rail, plus replacing the fuel pump, fuel filter, fuel pressure regulator, spark plugs, plug wires, pickup coil, coil, distributor cap, and rotor I cannot get the car to start. It turns over great and I know that I'm getting spark and fuel, and that the timing is correct but the car just refuses to start. Is there some kind of quirk that the 2.8 has that I am not aware of? Any ideas or suggestions would be extremely welcome.
Thanks,
Thomas
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The Market / Re: New shtuff for sale...
« on: May 21, 2017, 10:39:51 pm »
Ah I recall now, that "Cowl Wiper Cover" kit was made by Driven Visions..... I'm interested in it but I just bought my '86 GT today and have to get it running again first! ^,-,^