jamespond24

iTrader: (13)

I just got the GT40 turbo,SX FPR,1680cc injectors,3 bar map sensor. The car start and it died on the option that it was programmed. I notice that the fuel pressure drop from 40psi down to 20 psi when the key is turn to an ON position. I checked all the fuel hoses and couldn't find any gas leak or smell. My friend thinks it's the FPR? Please help if you think I there's something else that I need to try?

Thanks,
James

cewrx7r1

iTrader: (2)

What ECU are you running?

maxcooper

Run the fuel pump by putting a jumper on the diagnostic connector and then see what the fuel pressure is. Checking it with the pump not running doesn't tell you much.

If there is something "wrong" with the FPR, the odds are that it is just not plumbed correctly rather than actually faulty. Fuel comes from the pump (make sure you get the right line in the engine bay), through the rails, into the side of the FPR, out the bottom of the FPR, and then back to the tank. Or at least it should.

Is the ECU setup correctly for the 3-bar MAP sensor?

-Max

jamespond24

iTrader: (13)

power FC

jamespond24

iTrader: (13)

I think I got the fuel line running right like you posted. I was wondering if a car with different single setup could use the same map?

twokrx7

iTrader: (1)

There are so many things that could keep the car from running. Sometimes the idle adjustments need to be changed, it could be a sensor, your wiring job, fuel plumbing, ...

Post your .dat so folks we can take a look at your map to make sure the basics are right. Otherwise I would suggest getting an experienced single turbo PFC forum member to come over for a beer and some simple trouble shooting.

jamespond24

iTrader: (13)

I just bought a datalogit and hopefully it be here within this week. R-magic is trying to help me with this problem, so far we think the FPR is (just bought one on the way) and when the datalogit comes we're going to do some tunning. If anybody that lives close to Pittsburg, Ks. that had experience in tunning the PFC please help if you're around?

cewrx7r1

iTrader: (2)

The turn the key on pressure characteristics you memntion are common with the PFC. It pre-primes the fuel before starting. The stock ECU does not do that.

Also the DIAG FP turn on, I am not sure if that works with other than a stock or PFC ECU. That is why I asked.,



pressure

rzograbian

i had this problem too... when you get the datalogit, go to the map sensor options and you have to set the offset and everything to be right or the car will just die,..... the map sensor is not set correctly... if you didnt change the options at all, then thats your problem right there.... search the fourm for how to do it because it has been convered many times and there is a lot of different options to try..
-Roman

jamespond24

iTrader: (13)

Thanks rzograbian, I got the datalogit but now waiting for a laptop so I could do something. The person that program my ECU had it on option 2 and it still died after start? I will do more search Thank you.

rzograbian

No problem


he was correct in selecting option 2 but the numbers need to be changed... also, i have thought about this and tested my car with this after the 3 bar map sensor install.... tee the vacuume hose that is going to the map sensor with a hand pump and a boost buage all hooked together air tight.. now using the pump, give it 5 psi of pressure with your ignition on looking at your guage.. see what your pfc reads.... its in bar so you have to do the convesino but if your mechanical gauge is reading 5 psi or 10 psi and your commander is reading .2bar or something that is way off like that, then its set wrong....


-Roman