2002 BA 5.4L 3V Ford fairmont ghia

martynogutsnoglory · 20-07-2023, 08:07 PM

Engine check engine light came on backfired ran really rough. Shut her down. Check for leaks. Disconnect battery. Left 30 minutes tried it again. same. Next i video throttle body butterfly without engine running its opening closing but seems like it might be a too much open at idle. On the sound recorder i can hear the throttle body is noisy. So i went ahead and bought the new one. Looks like the PVC is okay. i will have a could look tomorrow before i do new install. Been running good until this morning.

T3rminator · 20-07-2023, 08:11 PM

Quote:

Originally Posted by martynogutsnoglory

Engine check engine light came on backfired ran really rough. Shut her down. Check for leaks. Disconnect battery. Left 30 minutes tried it again. same. Next i video throttle body butterfly without engine running its opening closing but seems like it might be a too much open at idle. On the sound recorder i can hear the throttle body is noisy. So i went ahead and bought the new one. Looks like the PVC is okay. i will have a could look tomorrow before i do new install. Been running good until this morning.

hmmm with a backfire, possibly TB related then I reckon. I once messed about with my TB and it backfired, and shut down. Then I had trouble starting the car again

Towed it to the mechanic, he "cleaned" the throttle body, and it started working again. The 5.4L TBs are temperamental at best.

PooDog · 21-07-2023, 08:41 AM

Quote:

Originally Posted by T3rminator

hmmm with a backfire, possibly TB related then I reckon. I once messed about with my TB and it backfired, and shut down. Then I had trouble starting the car again

Towed it to the mechanic, he "cleaned" the throttle body, and it started working again. The 5.4L TBs are temperamental at best.

You can get a gunk build up around where the throttle butterfly closeseach time they close they sort of slowly build a wall of gunk .... worth a look , easiest to clean taking it off then you can attack it from both sides

T3rminator · 21-07-2023, 05:33 PM

Quote:

Originally Posted by PooDog

You can get a gunk build up around where the throttle butterfly closeseach time they close they sort of slowly build a wall of gunk .... worth a look , easiest to clean taking it off then you can attack it from both sides

These TBs come coated with, I think, teflon, and shouldn't require a lot of cleaning for a healthy engine. The OEM ones actually have a sticker on it that states "do not clean". I know a lot of people who ignore this, including myself, and clean it anyways. But I always give it a coat of teflon after cleaning. I have never noticed these TBs to gunk up on our falcons, but have noticed that on the 3vs, the underside of the plate can get oily and slimey. The PCV vacuum inlet sits just underneath.

I have seen plenty of really bad gunked up ones off the F150, using the same TB.

PooDog · 21-07-2023, 06:16 PM

Quote:

Originally Posted by T3rminator

These TBs come coated with, I think, teflon, and shouldn't require a lot of cleaning for a healthy engine. The OEM ones actually have a sticker on it that states "do not clean". I know a lot of people who ignore this, including myself, and clean it anyways. But I always give it a coat of teflon after cleaning. I have never noticed these TBs to gunk up on our falcons, but have noticed that on the 3vs, the underside of the plate can get oily and slimey. The PCV vacuum inlet sits just underneath.

I have seen plenty of really bad gunked up ones off the F150, using the same TB.

OK, I didn't know that ,my AU got quite a bad dose of it and had to scrape it off