• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

No start condition

J

JRSLS6

New member
Hello All,
New memeber here. I have been visiting here for a while.
I have a 99 Grand Prix GT that will not start.
The car cranks but doesn't start.
I have replaced the crankshaft postion sensor and camshaft postion sensor and I have spark off coil packs.
I have between 38-42 psi fuel pressure, which seems low, since it specs at 48 or more. I changed fuel filter with no change in pressure.
I tried pulling off the Mass Airflow wires and tried starting with no luck.
I have spark and I have fuel at the rail. I don't know what pulses the injectors or how to check them.
Does anybody have any idea which direction to go in?
Will that low of fuel pressure cause this no start condition?
Thanks for your help.
John
 


Is the car backfiring at all? When you put back on the harmonic balancer was it lined up perfect? I messed up a crank key by it being off a bit once.
 
Since I had spark and fuel I thought it must be air related. So I pulled the throttle body and cleaned all of the carbon buildup out ( it was a lot ) and since the IAC was gunked up, I replaced it. After I got it all back together it fired right up, took it for test drive and it runs without issue. Hopefully it is repaired for a while.
 
Nice job fixing it, I guess Ill have to try replacing the IAC on my camaro tomorrow, its doing the same thing.
 
You must log in or register to reply here.
Back
Top