Page 1 of 2 1 2 >
Topic Options
Rate This Topic
#16339 - 08/09/09 04:09 PM another possible fueling issue.... :(
'01 GT Offline
Member
Registered: 10/23/07
Posts: 3523
Loc: Milwaukee, WI
ok, so today i decided to keep an eye on my ltft's because i was getting random spurts of KR everywhere. So, as i was watching them, i notice while coasting i was reading -22.1 ( normally i am around -16.4 ). Then I gave it a good amount of gas and i was only down to -13.2(normally closer to -5). So, i went WOT and i was only at -2.3(normally between +2 and 0 ). Than i decided to just drive normal and out of nowhere the ltfts spiked up to +13.2 and dropped immediately back down to -13.2 to -16.4.

Is my fuel pump going bad or am i just imagining things? Because I have a brand new NA quick change fuel pump sitting in my basement, just never installed it.
_________________________

Current:
2004 Dale Jr Monte SS

Old:
01 3.2 intercooled GT RIP
Top
#16340 - 08/09/09 04:14 PM Re: another possible fueling issue.... :(
ordonez1307 Offline
Member
Registered: 04/18/05
Posts: 8901
Loc: Bradenton, FL
I think your tuner sucks.
_________________________
Corey Smith
Top
#16341 - 08/09/09 04:16 PM Re: another possible fueling issue.... :(
'01 GT Offline
Member
Registered: 10/23/07
Posts: 3523
Loc: Milwaukee, WI
zzp dyno tuned. it just started happening though...
_________________________

Current:
2004 Dale Jr Monte SS

Old:
01 3.2 intercooled GT RIP
Top
#16342 - 08/09/09 06:42 PM Re: another possible fueling issue.... :(
ordonez1307 Offline
Member
Registered: 04/18/05
Posts: 8901
Loc: Bradenton, FL
Quote:
Originally posted by '01 GT:
zzp dyno tuned. it just started happening though...
Those trims should lock in at 0.

What's your AFR?
_________________________
Corey Smith
Top
#16343 - 08/10/09 12:14 AM Re: another possible fueling issue.... :(
'01 GT Offline
Member
Registered: 10/23/07
Posts: 3523
Loc: Milwaukee, WI
idk...all i have is a scan gauge. I dont know if i can find out what my afr is.
_________________________

Current:
2004 Dale Jr Monte SS

Old:
01 3.2 intercooled GT RIP
Top
#16344 - 08/10/09 03:18 AM Re: another possible fueling issue.... :(
ThunderBat Offline
Member
Registered: 03/11/04
Posts: 5176
Loc: Virginia
This is one of the reasons I hesitate to top swap my car...all these tuning issues I keep reading about. Call me lazy but I want to be able to set the car up and actually enjoy driving it (like I do now) all this constant fiddling reminds me of old aggrevating Holley carbs.
_________________________

Thoughts from the Highway of Life www.tobthebat.wordpress.com
Top
#16345 - 08/10/09 01:24 PM Re: another possible fueling issue.... :(
'01 GT Offline
Member
Registered: 10/23/07
Posts: 3523
Loc: Milwaukee, WI
well it was fine, and i do enjoy driving it. It would be soo mch easier if i knew how to tune, but i dont and i dont have time to learn how to tune either....just have to suffer with it i guess....
_________________________

Current:
2004 Dale Jr Monte SS

Old:
01 3.2 intercooled GT RIP
Top
#16346 - 08/11/09 02:44 AM Re: another possible fueling issue.... :(
'01 GT Offline
Member
Registered: 10/23/07
Posts: 3523
Loc: Milwaukee, WI
so, no one can help me with this? confused
_________________________

Current:
2004 Dale Jr Monte SS

Old:
01 3.2 intercooled GT RIP
Top
#16347 - 08/11/09 05:38 AM Re: another possible fueling issue.... :(
ThunderBat Offline
Member
Registered: 03/11/04
Posts: 5176
Loc: Virginia
If ZZP tuned it then I would contact them first
_________________________

Thoughts from the Highway of Life www.tobthebat.wordpress.com
Top
#16348 - 08/11/09 10:48 AM Re: another possible fueling issue.... :(
20gtp02 Offline
Member
Registered: 04/13/06
Posts: 6709
Vac leak. Bad gas. Weather. multiple issues can be at play. Retune even.
_________________________

2002
Top
#16349 - 08/11/09 03:42 PM Re: another possible fueling issue.... :(
'01 GT Offline
Member
Registered: 10/23/07
Posts: 3523
Loc: Milwaukee, WI
could there be a possibility of a fuel pump going bad?

I dont know of anyone around here to retune my car. Im not driving all the way to michigan again to have them retune the car...
_________________________

Current:
2004 Dale Jr Monte SS

Old:
01 3.2 intercooled GT RIP
Top
#16350 - 08/11/09 04:05 PM Re: another possible fueling issue.... :(
20gtp02 Offline
Member
Registered: 04/13/06
Posts: 6709
Good info in this thread Timmmy:

http://www.grandprix.net/ubb/ultimatebb.php?ubb=get_topic;f=1;t=012517#000001
_________________________

2002
Top
#16351 - 08/11/09 04:07 PM Re: another possible fueling issue.... :(
20gtp02 Offline
Member
Registered: 04/13/06
Posts: 6709
Fuel pressure should be 48-55 psi at the fuel rail, with the key on and the pump running.
_________________________

2002
Top
#16352 - 08/11/09 04:14 PM Re: another possible fueling issue.... :(
'01 GT Offline
Member
Registered: 10/23/07
Posts: 3523
Loc: Milwaukee, WI
ill have to check out one of my local mechanics to see whats up. if the fuel pressure is good, i would than need for someone to help me retune the car....
_________________________

Current:
2004 Dale Jr Monte SS

Old:
01 3.2 intercooled GT RIP
Top
#16353 - 08/11/09 10:58 PM Re: another possible fueling issue.... :(
20gtp02 Offline
Member
Registered: 04/13/06
Posts: 6709
Check for vac leaks?
_________________________

2002
Top
Page 1 of 2 1 2 >