masong
SILVER Star
My 92 Fj80 left us stranded today, first time ever. Had it towed back to the shop, where I was able to limp it in, barely, and left it to warm up. As it has been pretty damn cold (0 degrees last night)here in Montana the last few days and I have yet to put any gas drying agents in the fuel for the year I figured that is the first step. I didn't spend much time on the side of the road looking under the hood but I'm pretty sure its a fuel delivery problem.
It idles rough, but starts fine. If you give it any throttle in Park/Neutral or Drive it pretty much dies. The only way I could move it was to start it, and while the idle was still high, drop it in gear and not touch the throttle, idling along until it stalled, then restart.
Upon reading my FSM it looks like the fuel pressure regulator has a vacuum operated flow mechanism that will be the first thing I check after verifying that the fuel is not suffering from icing. Do these cause a no go situation if the vacuum line failed? seems unlikely.
Next I was going to check the fuel filter and replace it.
And Lastly the Fuel pump, although proper testing before hand seems prudent.
Anything I'm missing? It certainly seems to me like a fuel issue but I may be missing something. IIRC any sensors going wonky would lead the ECU to default to rich which is not the apparent issue.
Also, no codes, no CEL, Volt meter was nominal, engine temp at normal, car had been running and driving all morning.
Any tips appreciated,
Mason
It idles rough, but starts fine. If you give it any throttle in Park/Neutral or Drive it pretty much dies. The only way I could move it was to start it, and while the idle was still high, drop it in gear and not touch the throttle, idling along until it stalled, then restart.
Upon reading my FSM it looks like the fuel pressure regulator has a vacuum operated flow mechanism that will be the first thing I check after verifying that the fuel is not suffering from icing. Do these cause a no go situation if the vacuum line failed? seems unlikely.
Next I was going to check the fuel filter and replace it.
And Lastly the Fuel pump, although proper testing before hand seems prudent.
Anything I'm missing? It certainly seems to me like a fuel issue but I may be missing something. IIRC any sensors going wonky would lead the ECU to default to rich which is not the apparent issue.
Also, no codes, no CEL, Volt meter was nominal, engine temp at normal, car had been running and driving all morning.
Any tips appreciated,
Mason