Supercharged 4.6 idle
11-06-2007, 06:46 AM
#11
4th Gear Member
Join Date: Oct 2006
Location: NC
Posts: 1,185
RE: Supercharged 4.6 idle
ORIGINAL: uberstang1
im at a total loss then, thougt it was an issue with the tune, had it retuned, same problem, anything under 1k idle after a few seconds it will stall and all i smell is fuel, assumed it was spark cut too, went over the entire electrical system and nothing..... guess ill have to settle for the idle
im at a total loss then, thougt it was an issue with the tune, had it retuned, same problem, anything under 1k idle after a few seconds it will stall and all i smell is fuel, assumed it was spark cut too, went over the entire electrical system and nothing..... guess ill have to settle for the idle
11-06-2007, 06:47 AM
#12
RE: Supercharged 4.6 idle
Well ive gone over everything just about, only 2 possibilities left, also 2 tunning shops with a reputation are also at a loss. The last 2 things i can come up with is it has something to do with the IMRC deletes on the 4v, or my CEL comes on for the fuel pump relay circuit to hot, but there is no fuel pump relay on the 2v by the looks of the wirring diagriam, either way these 2 issues dont realy seem like they would have an bearing on my problem. As far as it causing major damage by letting it go, I do not beleive having a higher idle will cause damage to the car, its just that a higher idle, the car is not leaning out nor riching out, the tune is pretty much dead on.
11-06-2007, 06:49 AM
#13
RE: Supercharged 4.6 idle
Just a thought, my shop said that they don't like Walbro fuel pumps as they tend to burn out. As a shot in the dark, could your fuel pump be going? I mean, could it be needing more power caused by the higher idle just to keep the fuel going? If you're smelling fuel after it dies, it just might be a backup of fuel in the lines because the pump doesn't have what it takes anymore. Just a thought.
11-06-2007, 06:50 AM
#14
RE: Supercharged 4.6 idle
I brought this up once before too, and i beleive 2000gt4.6 had problems with his if it idled under 1000 as well, but i dont recall him pinpointing any problems
11-06-2007, 07:11 AM
#15
2nd Gear Member
Join Date: Jan 2007
Location:
Posts: 342
RE: Supercharged 4.6 idle
ORIGINAL: uberstang1
Well ive gone over everything just about, only 2 possibilities left, also 2 tunning shops with a reputation are also at a loss. The last 2 things i can come up with is it has something to do with the IMRC deletes on the 4v, or my CEL comes on for the fuel pump relay circuit to hot, but there is no fuel pump relay on the 2v by the looks of the wirring diagriam, either way these 2 issues dont realy seem like they would have an bearing on my problem. As far as it causing major damage by letting it go, I do not beleive having a higher idle will cause damage to the car, its just that a higher idle, the car is not leaning out nor riching out, the tune is pretty much dead on.
Well ive gone over everything just about, only 2 possibilities left, also 2 tunning shops with a reputation are also at a loss. The last 2 things i can come up with is it has something to do with the IMRC deletes on the 4v, or my CEL comes on for the fuel pump relay circuit to hot, but there is no fuel pump relay on the 2v by the looks of the wirring diagriam, either way these 2 issues dont realy seem like they would have an bearing on my problem. As far as it causing major damage by letting it go, I do not beleive having a higher idle will cause damage to the car, its just that a higher idle, the car is not leaning out nor riching out, the tune is pretty much dead on.
11-06-2007, 07:15 AM
#16
RE: Supercharged 4.6 idle
Just throwin it out there, reason being i just got another 03 GT and it idled high and it was driven pretty easy since i got it, now theres a knocking comming from the engine bay. And on a cold start up you have to keep it over 1k rpm for a minute or it'll bog and die.
11-06-2007, 08:46 AM
#19
4th Gear Member
Join Date: Aug 2007
Location: Shelbyville, Indiana
Posts: 1,088
RE: Supercharged 4.6 idle
Mine has a high idle and a low idle same as it did before the supercharger. Cold or with the A/C on it idles at 1100. Warm with the A/C off it idles at 800. I have no problem with it stalling. Did you do the IAC mod?
