chrisweller2
New member
- Joined
- Aug 5, 2019
Hello fellow enthusiasts
I've been working on my 86 245 (N/A) for about a year now. I've done a lot of work to it, including replacing floor plans, rocker panels, head gasket, brakes, harness... You get the point. Lately, I've been having issues where my vehicle will idle extremely rough until it inevitably stalls. Restarting results in an immediate stall. I can put it in gear quick enough and start driving around, but then it suffers from random, sometimes very severe hesitations. When I reach a stop my car may stay alive or it may decide to stall. If I'm cruising and I put it in neutral, the rpms will fluctuate greatly and occasionally the vehicle will stall.
I know my ignition system is good, I've replaced all plugs, wires, cap, rotor, coil, engine harness, and redone all of the groundings.
I've checked and rechecked for vacuum leaks.
I've verified both fuel pumps turn on and as a safety measure I've replaced my Fuel Pressure Regulator and my Fuel Pump Relay.
I've verified that I have sufficient pressure at my injector rail (80 psi).
I have not replaced my O2 sensors or my MAF.
I've looked at my spark plugs and they were very dark and covered in carbon residue. Prior checks before this situation showed a tan color.
Also, my exhaust fell off halfway through, leaving only my cat (which I believe I also hear my honeycomb spinning in) and the first muffler (resonator?). Could this cause a loss of backpressure which could in turn cause intermittent stalling and a volatile idle?
Thanks in advance for reading. Please let me know if I'm overlooking anything , or left out any information.
-Chris
I've been working on my 86 245 (N/A) for about a year now. I've done a lot of work to it, including replacing floor plans, rocker panels, head gasket, brakes, harness... You get the point. Lately, I've been having issues where my vehicle will idle extremely rough until it inevitably stalls. Restarting results in an immediate stall. I can put it in gear quick enough and start driving around, but then it suffers from random, sometimes very severe hesitations. When I reach a stop my car may stay alive or it may decide to stall. If I'm cruising and I put it in neutral, the rpms will fluctuate greatly and occasionally the vehicle will stall.
I know my ignition system is good, I've replaced all plugs, wires, cap, rotor, coil, engine harness, and redone all of the groundings.
I've checked and rechecked for vacuum leaks.
I've verified both fuel pumps turn on and as a safety measure I've replaced my Fuel Pressure Regulator and my Fuel Pump Relay.
I've verified that I have sufficient pressure at my injector rail (80 psi).
I have not replaced my O2 sensors or my MAF.
I've looked at my spark plugs and they were very dark and covered in carbon residue. Prior checks before this situation showed a tan color.
Also, my exhaust fell off halfway through, leaving only my cat (which I believe I also hear my honeycomb spinning in) and the first muffler (resonator?). Could this cause a loss of backpressure which could in turn cause intermittent stalling and a volatile idle?
Thanks in advance for reading. Please let me know if I'm overlooking anything , or left out any information.
-Chris