92 GT Stall/Stumble Woes (MSD 6a issues)
Greetings all - been lurking a while, first time posting. Recently picked up a not-so-gently used 92 GT for a bit of a project/driver and have run into a host of issues since then. Most recently was it all the sudden stalling and not generally not running/wanting to start, just boom, out of the blue.
Yes, I read the sticky. It's printed off and sitting in my pass. seat in my 'project' car.
Anyway, I went though a ton of stuff before I found that sticky here and just last night I bypassed the MSD 6a box and presto it fired right up, no problems. In the process of trying to isolate I took just about everything apart so I need to go back today (hopefully) and start to clean it all up. While it starts and appears to be strong now, there is still a bit of a stumble when giving it throttle.
Back to the 6a. When it was in, all of the sudden at a light when taking off it would try to stall, backfire, feel like it was missing out on WAY more than 1 or 2 and was barely able to limp it home. Lots of horns honking at me. Once home, I could barely get it started and keep it running. And when I did it was only because I kept messing with the timing and had it set to nearly 30 with spout out (yeah, I know). Anyway, pulled it (6a) out of the equation last night and its started right up. Timing back to 12'ish and its still fine, just throttle stumbles.
Question is - Is there any one particular thing that would cause the 6a to fail or all of the sudden not play nice or is it just weak to begin with? I don't know much of the history of this car as I bought it used. I know it has been beaten so I am excited to give her a good home. She has a VERY solid body but needs a ton of work. Not a spot of rust. Needs a bunch of nickle and dime and well, higher dollar stuff! Lots of mods already done. Right now I am still trying to sort out my confusion over compter+MAF+injector size decable (EGR delete too - guy just bolted a piece of steel to the port
).
Thanks guys - curious for your thoughts. I'd sure like it to be something else possibly tripping this 6a up since its already in the car, but if its junk, its junk. If it helps, I'll post a mod list below. Note: I realize that there are a lot of mismatched things the previous owner did. I bought it as a project. However, any pointers and tips would be helpful. Its been a **LONG** time since I have done this.
Greetings all - been lurking a while, first time posting. Recently picked up a not-so-gently used 92 GT for a bit of a project/driver and have run into a host of issues since then. Most recently was it all the sudden stalling and not generally not running/wanting to start, just boom, out of the blue.
Yes, I read the sticky. It's printed off and sitting in my pass. seat in my 'project' car.
Anyway, I went though a ton of stuff before I found that sticky here and just last night I bypassed the MSD 6a box and presto it fired right up, no problems. In the process of trying to isolate I took just about everything apart so I need to go back today (hopefully) and start to clean it all up. While it starts and appears to be strong now, there is still a bit of a stumble when giving it throttle.
Back to the 6a. When it was in, all of the sudden at a light when taking off it would try to stall, backfire, feel like it was missing out on WAY more than 1 or 2 and was barely able to limp it home. Lots of horns honking at me. Once home, I could barely get it started and keep it running. And when I did it was only because I kept messing with the timing and had it set to nearly 30 with spout out (yeah, I know). Anyway, pulled it (6a) out of the equation last night and its started right up. Timing back to 12'ish and its still fine, just throttle stumbles.
Question is - Is there any one particular thing that would cause the 6a to fail or all of the sudden not play nice or is it just weak to begin with? I don't know much of the history of this car as I bought it used. I know it has been beaten so I am excited to give her a good home. She has a VERY solid body but needs a ton of work. Not a spot of rust. Needs a bunch of nickle and dime and well, higher dollar stuff! Lots of mods already done. Right now I am still trying to sort out my confusion over compter+MAF+injector size decable (EGR delete too - guy just bolted a piece of steel to the port
). Thanks guys - curious for your thoughts. I'd sure like it to be something else possibly tripping this 6a up since its already in the car, but if its junk, its junk. If it helps, I'll post a mod list below. Note: I realize that there are a lot of mismatched things the previous owner did. I bought it as a project. However, any pointers and tips would be helpful. Its been a **LONG** time since I have done this.
, stains in carpet and mismatched tail lights. 
