r0gera

Thanks to this forum have it fixed... It was the stupid MAF sensor. I had reconnected the wire to the MAF but had not connected the air filter to the throttle body yet. As soon as I connected that tubing it fired and ran like it should.. Was trying to verify the engine was all good and ready to go before buttoning up all the little loose ends and apparently the thing will not run without that part hooked up.

Here is the scoop.. my 90 loyale sedan blew the throw out bearing and tore up the shaft on the front of the tranny. So pulled the engine out of my 89 wagon parts car which is an automatic, put the torque converter on the engine off good engine and bolted it all back in the 89. Both are EFI (throttle body) and appear to be the same. When I went to test fire it, the thing will start but after starting dies. If I dribble fuel down the throttle body I can keep it running so it sounds to me like an electrical/control type issue on the throttle body. Disconnected the fuel line and there is plenty of fuel going to the engine.. and plenty of flow back through the return line. So fuel is making it to the throttle body but appears that it is not letting anything into the engine. It appears that the fuel injector is working when the engine is in start mode or else it wouldn't fire when I am cranking it... as soon as I stop cranking.. fuel appears to die. And what I mean by it will start then die.. when i crank it.. fires up.. revs to 1500rpm or so.. let off the starter and it shuts off and dies. All gauges work including oil pressure.. which on the gauge is fine(these run through the same plug as the lines that go to the throttle body from what I saw) (Is there a low oil pressure cut off that would shut fuel off in run mode if oil pressure is low?) What are the easiest and most likely suspects? A fuel cut off valve? Some safety sensor switch? TPS? Should I just pull the wiring and throttle body off the engine from the automatic and replace all that or would that be a waste of time. To me it seems like there must be some type of fuel cut off valve not letting fuel into the throttle body. That motor ran fine before it overheated so the recipient donor car should all be in good shape electrically. This engine was running fine when it was in the 90 and I changed nothing on the engine except adding a T into the vacuum line to run down to the tranny and pulling the clutch off to replace it with the torque converter. Any thoughts?? If I can narrow it down before tearing into it that would be great because am doing it in the driveway in 30 degree weather. Thanks for any thoughts or insight. I kept it running for at least 2 minutes by misting a little starting fluid into the throttle body... and it ran relatively smooth all things considered. Even was able to rev it up after dumping fuel down the throttle body till it ran out.

ok.. I am a total retard.. and am blaming it on a long cold day doing an engine swap in the driveway.. they are both loyale's. my bad and my apology for posting in the wrong section.

And by starts but dies.. meaning.. When I crank it.. it will fire up.. but then when the starter circuit is disabled. it dies out.. but if I feed the throttle body with fuel.. starter fluid or gas.. it will run as long as I dump fuel down it.

Here is the scoop.. my 90 legacy sedan blew the throw out bearing and tore up the shaft on the front of the tranny. So pulled the engine out of my 89 wagon parts car which is an automatic, put the torque converter on the engine off good engine and bolted it all back in the 89. Both are EFI and appear to be the same. When I went to test fire it, the thing will start but after starting dies. If I dribble fuel down the throttle body I can keep it running so it sounds to me like an electrical/control type issue on the throttle body. Disconnected the fuel line and there is plenty of fuel going to the engine.. and plenty of flow back through the return line. So fuel is making it to the throttle body but appears that it is not letting anything into the engine. All gauges work including oil pressure (which runs through the same plug as the lines that go to the throttle body) What are the easiest and most likely suspects? A fuel cut off valve? Some safety sensor switch? TPS? Should I just pull the wiring and throttle body off the engine from the automatic and replace all that or would that be a waste of time. To me it seems like there must be some type of fuel cut off valve not letting fuel into the throttle body. That motor ran fine before it overheated so it should all be in good shape. This engine was running fine when it was in the 90 and I changed nothing on the engine except adding a T into the vacuum line to run down to the tranny and pulling the clutch off to replace it with the torque converter. Any thoughts?? If I can narrow it down before tearing into it that would be great because am doing it in the driveway in 30 degree weather. Thanks for any thoughts or insight.