How do you check a 2002 T&C's fuel pressure?

1618 Views 4 Replies 3 Participants Last post by valiant67, Jul 1, 2013

Dan Phillips

Discussion Starter · Jul 1, 2013

Hi all,

It has a 3.3 motor, I'm pulling PO171, PO442, PO455 and PO456. It won't run above 4000 in park (fuel starvation? Governor?). In drive it will rev higher, but it really sluggish.

Wondering what the fuel pressure is, but I have not found a schraeder valve. I've cleaned the MAP sensor and throttle body. It would not start until I manually activated the fuel pump via jumping the fuel pump relay.

Any help would be appreciated.

Dan

Save

1 - 5 of 5 Posts

ImperialCrown

· #2 · Jul 1, 2013

Diagnose for P0171-fuel system lean. The other codes are for evaporative emission system leaks (maybe cracked/dry rotted rubber vapor hoses) and wouldn't cause running problems.
If there is a fuel pressure test port, it would be on the front fuel rail.
If not, then you need a 'quick connect' adapter hose to go inline with the rail supply hose to connect your fuel pressure gauge. You want to see about 58 psi (+/- 5 psi) or ~400kPa.

http://www.costplustools.com/Miller-Special-Tools-6539-ADAPTER-FUEL-PRESSURE_p_9044.html

Save

Dan Phillips

Discussion Starter · #3 · Jul 1, 2013

Crown,

Thanks for the tips. I'll have to see if I can hunt down the adapter.

Dan

Save

Dan Phillips

Discussion Starter · #4 · Jul 1, 2013

Low fuel pressure. Starts every time now. Still won't rev over 4,000 in park. Anybody know if these things have a governor? Runs much better but still sluggish in my estimation. Will ask the owner if that is how it has been running lately.

Thanks

Save

valiant67

· #5 · Jul 1, 2013

Yes, there is a governor when in park.

Save

1 - 5 of 5 Posts

This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.

Top Contributors this Month