2002 Pont Grand Am - 2.2L ECO No Start

[autoxperts]

Car died and would not restart.

Car was towed in. checked for fire it was weak, used test module and coil assemble still the same . checked fuel pressure none, check relay its not hot all the time, only one side when key is on, fuses good, check all grounds good.

[steven kiser]

PCM will not fire pump unless it's seeing rpm. You should get about a 5 second activation signal when key is turned on then it cuts out if rpm isn't seen. I've been running into a few security system issues lately. An alarm that the owner didn't know he had, key falling away from reader in an after market remote, etc.

[autoxperts]

it has rpm reading.

[autoxperts]

not getting any reading at all. traced wires not seeing broken wires.

[autoxperts]

its was supposed to say no signal not reading

[steven kiser]

Let's take a step back. A few things here. We have weak spark and low fuel pressure. If you spray fuel into the intake will it fire up? You have voltage at the relay but if you manually activate it what are the amps. Something in my head (besides marbles) is making me think to look into a wiring issue. The primary feed wire to the accessories may be compromised. The amp reading is the key here. If amps are good then look elsewhere. I learned a long time ago a test light will on occasion lead you falsely along. I had a head banger and finally i started tracing by amps and found a wire that once hosted a dreaded scotch lock had been moved and it opened at the splice and 1/2 the strands were cut. Eventually it caused a burn at that point that left enough strands to show voltage but couldn't carry the amp load. This may be one of those "outside the box" issues that there is no real proper diagnostic flow to follow. Sometimes after market pimple faced kid installs take a while to crash.

[autoxperts]

when the car died it started jerking, this is my sisters car she has owned it since new. iam the only person that has work on it. she said before it died it started shake n and her traction control light came on and it would not go off then it died.ill check the amps

[sbebenelli]

Have you checked for any codes?

[autoxperts]

just lean bank one

[autoxperts]

found a broken wire fix it. relay will command for about five seconds, and car will start and idel for 10 seconds and die. i can command it with scanner same thing .iam think n a bad pump

[brianp87]

What is the fuel pressure reading running and when it stalls? I show 40-57 at an idle and with koeo 60

[autoxperts]

20-25 idel 10-15 stall

[brianp87]

Thats not enough. Either a restriction somewere(filter?) or a weak pump.

[autoxperts]

had factory filter changed it

[steven kiser]

If it has a regulator it could be stuck open.

[autoxperts]

i forgot to post fixed. fuel pump was weak. thanks