May 20, 201213 yr My brother's GL starts and dies almost immediately. Pulled the codes and has only a code for a egr solenoid Here is the kicker thought. It starts and sometimes it will run for a minute, then bog and die. It cuts off the fuel. Sometimes, not always, if you hold the key to start it will run until you let it back to "run". Only sometimes. I cannot figure this out. is there a way to find out why the ECU isn't firing the injector? Is the ECU just bad? the spark does not ever drop off but is smells "flooded"...
May 21, 201213 yr Try unplugging the mass air sensor and see if it will stay running. If it does replace the mass air.
May 21, 201213 yr Also check the egr valve if its sticking it will stall out. When it is running you can push the egr up and the idle will lower. If you press harder the car will die. The egr solenoid keeps the egr from getting vaccum at idle. Maybe unhook the vac line to the egr.
May 21, 201213 yr Author tried the maf, when it's unplugged, it won't run at all put a pressure gauge inline to the feed line at the filter and it gets 20psi cranking pushed on the egr and got no difference, vaccum unhooked or hooked up. It did this to me when I owned it. Did it three times and eventually started each time. That was over a year, and 20k miles ago. exact same problem. It has a new cat, 126k motor, im a decent mechanic but I am stumped.
May 21, 201213 yr The fuel pressure sounds a bit low for an SPFI motor (I'm assuming it's not MPFI since you only mention a single injector. Or is it carbed?). Have you replaced the fuel filter?
May 21, 201213 yr Author does it have two filters? I have replaced the one under the hood, but forgot there may be a second!!!!! And yeah its a SPFI.
May 21, 201213 yr No, just the one filter! If you replaced it chances are that is fine. Still not likely to be the ECU, fuel pump could be worn but...hmm. What is the code/s blinking on the ECU? Could you have a problem with the engine temp sensor that is reducing the fuel input? Also--don't burn out your starter by holding the key to 'start'. You'll end up with two repair jobs.
May 21, 201213 yr check the wire harness on the brown realy on top of colloum its the efi realy has a habbit of coming partaly unpluged or going bad it makes the conection to keep car runing after startup or feul pump realy and make shure coil grounds are clean and distributor has to be grounded to engine and check the fuses just for fun
May 21, 201213 yr Author the ecu blinks 34 egr solenoid, so we unhooked it and the egr vacuum thinking it was choking it out with exhaust gas. I think ivan may be on to something with the efi/pump keep alive relay. i checked the ignition switch to make sure it was keeping the computer alive after cranking and it was also forgot to add, it is a 88 ea82 with spfi i need to go back over there and see if the fuel pump is shutting off when key is released back to run.
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