no fuel pressure?

[ecli1999gs-t]

Ok, I finished my 16g upgrade a while ago and I started the car a couple of times since today and it would fire up great, I even rev'd it up to 4k and the car felt good. Today I started the car and let it idle because I want to start tuning with pocketlogger and after a few minutes the car slowly died out (stopped running). I tired starting the car again and it would turn for a while but not fire up also after a couple of seconds of the car turning is started to make a cycling sound like something spinning really fast. I popped the hood and I have no fuel leaks however I did noticed that my fpr gauge read 0 psi. I dont understand how all of a sudden I'm losing fuel pressure. is the the fpr or fuel pump. Any thoughts I need to get the car running and tuned before winter. thanks

[1992awdlaser]

Pinch off the return line and see if the pressure goes up.

[KelTsi90]

Check the MPI relay/fuse...

[boostngsx]

Originally Posted by KelTsi90

Check the MPI relay/fuse...

Probably a newb question here but, where can that be found?

[ecli1999gs-t]

I pinched the return line off my afpr like 1992awdlaser said and tried starting up the car and the gauge still reads zero. Also I know the pump will not prime if the key is in the on position the engine must be cranking. When I try cranking the car I don't hear the pump priming or even trying to prime.

-Because I rewired the pump myself I checked the ground and to see if any wires were lose and nothing everything is in fine.
-I disconnected my battery to resent my ecu and connected it and tried again and still nothing

I don't understand how the car was working perfectly and so smoothly then all of a sudden just die out? The last thing I did was plug in my my OBDII, connect it to my PDA start the car and try to run pocketlogger (It didn't connect which is a different issue) after about 2 mins the car's rpms slowly reduced and the car quietly turned off.

If this is a fuse issue where and what fueses should I check and if its that MPI Relay Keltsi90 mentioned what should I do with that to see if its ok.
thanks

[1992awdlaser]

Since it slowly turned off I am going to say the fuel pump is bad. Take the assembly out and apply battery voltage and ground to the terminals to see if it will turn on.

[ecli1999gs-t]

hey 1992awdlaser, I pulled out my fuel pump and I hooked it up to a battery and I worked fine. I'm going to retrace my rewiring again are there any other ideas you might have. The last time I tried starting my car all that happened was the car was turning, fuel pressure is still at zero and I did not hear my pump prime. thanks

[steve]

Originally Posted by ecli1999gs-t

-Because I rewired the pump myself I checked the ground and to see if any wires were lose and nothing everything is in fine.
-I disconnected my battery to resent my ecu and connected it and tried again and still nothing

Since you rewired it you need to check that your getting ample voltage and a good ground.
If you also used a relay you should check that it's working correctly and verify that the pump works when you trigger the relay.

[cavillac]

Originally Posted by ecli1999gs-t

hey 1992awdlaser, I
pulled out my fuel pump and I hooked it up to a battery and I worked fine.

Sounds like you may have bumped the commutator from the bad spot in the starter.

Still sounds like a bad pump to me..