99 Camry No Start ??? - Toyota Nation Forum : Toyota Car and Truck Forums

bbs360 · 07-08-2009, 08:45 PM

I have a 99 that died while driving down the freeway. After towing home and some testing these are the results; No power at fuel pump, hotwired fuel pump good, EFI fuse good, fuel pump fuse good, EFI & Circuit opening relay good, car will start with starting fluid spayed in the air intake. From my research the only thing that inhibits fuel system is camshaft position sensor. I ohm'd it and it was within specs. I imagine that it could still be bad even though the ohm's are good but I didnt want to just throw parts at it. Any ideas?? Am I on the right track?

Mike Gerber · 07-08-2009, 11:16 PM

Have you checked the wiring between the relays and the fuel pump?

Mike

bbs360 · 07-09-2009, 07:08 PM

Quote:

Originally Posted by Mike Gerber

Have you checked the wiring between the relays and the fuel pump?

Mike

Yes I forgot to mention I jumpered the circuit opening relay and the fuel pump will pump but still no start. Something is ihibiting the injectors from firing.

***96paseo*** · 07-09-2009, 10:47 PM

Pull the wire harness connector off one of the fuel injectors and see if there's 5 volts reference with the key on. If there is, then the ECU is not firing the injectors. Maybe sensor related. CEL on? A bad crank position sensor could keep it from starting.

bbs360 · 07-12-2009, 10:10 PM

I just tried a new camshaft position sensor and that didn't help. i will have to check the injector for the 5 volt reference next. Thanks

bbs360 · 07-12-2009, 10:13 PM

Quote:

Originally Posted by 96paseo

Pull the wire harness connector off one of the fuel injectors and see if there's 5 volts reference with the key on. If there is, then the ECU is not firing the injectors. Maybe sensor related. CEL on? A bad crank position sensor could keep it from starting.

The crank shaft position sensor controls spark right? It will start will starter fluid. The CEL is not on from what I cant tell. The battery died as I towed it home. I tried to pull the codes and got nothing. Which is odd because I have had an EVAP leak code forever p0446

bbs360 · 07-19-2009, 12:15 AM

Tested all electrical for the fuel pump and it is working. It is pumping and I have pressure at the fuel rail. I suspected the camshaft position sensor but I swapped it for a known good and no change. I checked the EFI fuse and Relay and I have power there and the relay is working. I checked the voltage at the injector with the key on and it showed 12.33 volts. It seems to me that the injectors just are not firing. ECM?? Any ideas??