I will try to do this today, since the car will most likely not be towed until early next week.

noob questions--Where is the fuel pump fuse? Is it where the other fuses are located? I can check battery voltage with cipher or CAMP2.

My fuel guage is reading 3/4 full and I haven't driven much since the last time I filled up. Is there another way to check how much fuel is in there besides the guage? I guess it can't hurt to go get a gallon of fuel or so, put it in, and try again, but I would be surprised if it is low on fuel unless there is a leak somewhere?

I guess I find it strange that I would have this fuel problem a week after the car drove fine--it just sat in my driveway for a week--I guess things can just go wrong/mechanically fail randomly The only other factor that changed between last week when it drove fine and now is an increase is temperature--from ~65f to ~90f.

 

nah, temperature wouldnt cause you to have no fuel pressure.

In your shoes, i'd hope it was the pump that went. If its a blown fuse, that could mean a ton of work tracing why it shorted. I'd be very concerned about a fuel pump short.

 

everyone thinks fuel pump? How do you check the fuel pump again? Sorry if I missed.

 

eek, I hate to ask what possibilities could cause a blown fuel pump fuse. My tuner thinks it is unlikely the the fuse blew and thinks it is likely the fuel pump that went bad, but won't know for sure, until he has a chance to look at it.

 

I'd like to know this too. Is the only way to take out the fuel pump and check?

 

It def sounds like the fuel pump went south.Here is what i would do (i can hear my fuel pump easily) turn the ignition on and listen for the loud humming noise that the walbro should make.If you hear it that means the fuel pump is getting current if you do not the fuse or the pump is done.

If you do hear the pump humming and you are still showing very low fuel pressure the the pump has died.

 

Which fuel return system do you have ?

You might also check the fuel pressure regulator. The pump may be running and the fuel pressure regulator may be the problem.

 

When the ignition is in the on position, I can hear a brief humm for a second or two and then it goes quiet. Before, this happened, I could hear a constant hum when the engine was primed/turned on. And yes, very low fuel pressure.

So if it is the fuel pump, replacing it with a new one should hopefully solve the problem?

 

The fuel system is what comes with the GTM stage 5 HKS SC kit. I believe it is a CJM return system. The fuel pressure regulator is a turbosmart unit with a HKS camp2 sensor in place of the analog one.

 

when it primes, you will only hear it for a second.

I would try to find a different fuel pressure gauge. You might be able to rent one from Autozone. Otherwise, any local car shop could check it for you.

Sounds like you can hear the pump prime. Could be a valve in the regulator crapped out. Have you tried to increase the fuel pressure with the regulator?

 

Since it is CJM, you can also try pm'ing "Phunk" on this forum. He designed that system.

 

nah, the cjm comes with an aeromotive FPR.

 

Maybe the fuel return system is "GTM" put together. I know the fuel rails are red and are GTM designed and the regulator is a blue turbosmart unit. Injectors are 600cc deatschwerks.

 

Any luck with this?

 

I added a few more gallons with a portable gas can, but still wouldn't start with very low fuel pressure. Fuel pump fuse checked out ok. The Walbro fuel pump was then swapped out in my driveway, but it did not work. After the swap, the CAMP2 shows fuel pressure of "0" when engine was primed and when cranking, the fuel guage was dropping to empty and back up again to 1/2 tank.

The car will be towed to the shop tomorrow morning.

 

when was the last time you had your crank sencer replaced?

 

It never has been. A crank position sensor and throttle position sensor were replaced while stock under warranty around ~3k miles. But not the crank sensor. There is about ~24k miles on the car currently.

 

Sorry to hear that. Humm wonder what this cause a problem. Where is your car going to?

Let us know when u find anything.

 

Thanks for the kind words. The car was towed this morning to GRD (where the s/c was installed and the tuning done).

 

Oh btw, I'm sure you have GTM rfs. My GTM came with turbosmart fpr.