I was on my way to work this morning and i stepped on it to get on the highway. i was in third gear climbing up to around 5000 or so and then it felt like it quit pulling. I noticed this a few days ago as well in third gear. If i get on it in first it pulls hard all the way to 6100 and my shift light comes on. I am wondering if this could be a fuel issue.

 

Could be a slipping transmission or maybe a severe lean issue on top.

 

When i got home today i tested my fuel pressure with the ignition on and engine on 38 with the vacuum line off 42. Now this is where it gets weird. I put the cap back on schrader on the fuel line and tried to crank it. It started but idled real low and then died. It wouldnt crank after that at all. I put the fuel pressure tester back on it and i have no pressure at all. When i turn the ignition on i hear the fuel pump click but i don’t hear it whine like it used to for a second. Anyone have any ideas? I am thinking it is my fuel pump.

 

Ohh sorry, I did not notice you have a Tremec T-56, I guess that rules out transmission slip.

You should tape the fuel pressure gauge to the windshield and monitor it as you drive (car under load). Should have 41-44 psi under full open throttle. What you are doing is not a adequate test since you want to see if the fuel pump cam keep up at higher injector duty cycles. Testing at idle is not sufficient and may not disclose real fueling issues.

I am confused on how you test, did you test fuel pressure with engine off, ignition key on and found sufficient fuel pressure, then tried to start it and noticed no fuel pressure? If so, then obviously your fuel pump is weak.

 

I just dont know why i dont have any fuel pressure at all now.

 

if you're not hearing the fuel pump when you turn the key then I would start there.

 

Thats what i was thinking. Does anyone recommend a good replacement?

 

I went out today when i got home and it starts up now. I put the fuel pressure tester back on it and with the ignition on and engine off i get 20. When i bled the pressure tester down before removing it and it wont start now. No fuel pressure at all now. If you bleed down the fuel rail how long should it take to prime it?

 

It should happen in a matter of seconds, have you replaced your fuel filter lately? Also how many miles do you have on your car? Could be a fuel deficient fuel pump.

 

Try running the pump with the fuel pump prime connector, next to the PCM. That will bypass the relay and the PCM signal, and verify if the pump will run and can produce the required pressure to prime the system.

Shoebox has a photo:

http://shbox.com/1/fuel_pump_prime.jpg

 

Fuel filter was replaced about a month ago.

 

I will try that when I get home tonight. Thanks

 

How do i test it with that wire?

 

Found my answer. Thanks again Injuneer

Because its only used to supply temporary power to the fuel pump, bypassing the pump relay and the PCM permits, to test the fuel pump. There is no matching connector to connect to it. You run 12V power from the battery to the connector to test the pump.

 

I tried this and it didnt make a difference. SO is it safe to say that it is my fuel pump? It has about 182,000 miles on it.