My '89 Supra Turbo won't run, any troubleshooters?

08-22-2005, 11:50 PM

Hey folks

. OK, well I've hit a snag with my 'ol beast - she won't run essentially, but there's more to it than that. I'll start with the current symptom, and then lay out some details that were a precursor to this event.
Right now, it will turn over and try to run but it lopes up & down about three times before knocking off with the engine bouncing between 2600 and 1000 RPMs ; and while doing this , the check engine light while come on and off in tandem with the loping of the engine (weird ?) . Ok, now to get to little things that came before it broke down. The first thing that was a sign was I was getting two engine error codes, and couldn't pass my emissions (essentially the car was running very rich) - the engine codes are #31 (air flow meter signal) and #24 (intake air Temp signal) - Ok, now logic would suggest that the AFM module is obviously bad and explains it running rich and then loping and knocking off - I have just replaced the Air Fuel meter and double checked the ECU to make sure everything is good to go.
So, where I'm at now is that logic tells me it should crank right up - yet, my supra is still doing the current symptom of loping 3 times and knocking off or just knocking off after turning over once. Now, let me add something to this equation -- I recently removed the carbon can for the evaporative emmisions for the fuel tank (I read somewhere that it isn't an issue, but just don't plug the line after removing the can) - ok, so I don't think this could cause a problem, although it is possible the line was temporary clogged so some pressure may have built up in the fuel tank --- Now be aware, my Supra is a jdm engine swap so it came with no exhaust recirculation system, nor was it equipped to take the line that normally comes from the black carbon canister.
Can somebody shed some light on what you think this could be??
I'm hoping someone on here has knowledge to see my explanation above and know exactly what it is because I'm perplexed.

These symptoms seem like they lead to a single issue , but it seems there must have been a second malfunction besides the Air Fuel meter happening simultaneously, ughhh. Come on , help a brother out ;o)

Take it easy, and thanks in advance.

08-22-2005, 11:50 PM	#1
pdogg Guest Posts: n/a	Hey folks . OK, well I've hit a snag with my 'ol beast - she won't run essentially, but there's more to it than that. I'll start with the current symptom, and then lay out some details that were a precursor to this event. Right now, it will turn over and try to run but it lopes up & down about three times before knocking off with the engine bouncing between 2600 and 1000 RPMs ; and while doing this , the check engine light while come on and off in tandem with the loping of the engine (weird ?) . Ok, now to get to little things that came before it broke down. The first thing that was a sign was I was getting two engine error codes, and couldn't pass my emissions (essentially the car was running very rich) - the engine codes are #31 (air flow meter signal) and #24 (intake air Temp signal) - Ok, now logic would suggest that the AFM module is obviously bad and explains it running rich and then loping and knocking off - I have just replaced the Air Fuel meter and double checked the ECU to make sure everything is good to go. So, where I'm at now is that logic tells me it should crank right up - yet, my supra is still doing the current symptom of loping 3 times and knocking off or just knocking off after turning over once. Now, let me add something to this equation -- I recently removed the carbon can for the evaporative emmisions for the fuel tank (I read somewhere that it isn't an issue, but just don't plug the line after removing the can) - ok, so I don't think this could cause a problem, although it is possible the line was temporary clogged so some pressure may have built up in the fuel tank --- Now be aware, my Supra is a jdm engine swap so it came with no exhaust recirculation system, nor was it equipped to take the line that normally comes from the black carbon canister. Can somebody shed some light on what you think this could be?? I'm hoping someone on here has knowledge to see my explanation above and know exactly what it is because I'm perplexed. These symptoms seem like they lead to a single issue , but it seems there must have been a second malfunction besides the Air Fuel meter happening simultaneously, ughhh. Come on , help a brother out ;o) Take it easy, and thanks in advance.