|
#11
08-13-2011, 10:16 PM
|
||||
|
||||
Hmmmm...at WOT it would switch to open loop, right?
|
|
#12
08-13-2011, 10:30 PM
|
||||
|
||||
|
not exactly open loop. it just adds fueling as a percentage on top of what is set by the pcm(BLM/LT-ST)
__________________
 1998 Firebird:buncha parts thats used to make it go fast..... not so much anymore.  BAAAAAA!!!!!!
|
|
#13
08-13-2011, 10:40 PM
|
||||
|
||||
|
Fuel pressure has already been checked right?
|
|
#14
08-14-2011, 12:22 AM
|
|||
|
|||
|
It should have been. That's also on my to do list. Been more concerned with getting paying jobs out the door rather than mess with my spare car.
It's doing it's new job quite well. It sits there and looks pretty all day lol.
__________________
The fleet... 
|
|
#15
08-19-2011, 10:48 PM
|
|||
|
|||
|
Ok, so, she checked fuel pressure finally. Would dip then climb when you whacked the throttle and didn't change at all when you pulled vacuum from it.
So, we changed the fpr last night. It's a little better now but still after it warms up it's stumbling and way down on power still. At least after the fpr and melted wire fix it's kinda drivable again. No where near what I should be though. Stumbles and breaks up. No more backfires now. Hmmmm
__________________
The fleet...
|
|
#16
08-20-2011, 04:51 AM
|
||||
|
||||
|
my buddys car just started doing a similar thing the other day....doesnt do it 100% of the time tho.
__________________
 1986 Camaro Iroc z28 305 TPI 700R4 -hooker-edelbrock 1 5/8" shorty headers-1.6 roller rockers-52mm TB-3.23 10 bolt- ...191rwhp/280rwtq...14.97@90.5 2.04 60' 2005 GMC Sierra 2500 LLY Duramax -exhaust-gauges-leveled-wheels-tune-egr delete....339rwhp/637rwtq
|
|
#17
08-20-2011, 08:54 PM
|
||||
|
||||
|
is the fuel pressure still dropping under full load? fuel pump might be heating up and thew volume is dropping. and once that happens stumble and lack of power. just be carefull if its lean you can melt pistons Real easy!!!
__________________
1998 Firebird:buncha parts thats used to make it go fast..... not so much anymore. BAAAAAA!!!!!!
|
|
#18
08-21-2011, 12:37 AM
|
||||
|
||||
|
Wouldn't that most likely throw a lean code though? And surely wouldn't backfire?
|
|
#19
08-21-2011, 01:58 AM
|
||||
|
||||
|
wont throw a lean code under PE(Power Enrichment). the pcm turns the O2's off and it wouldnt know. PE is after ~75% tps. is that about wen it starts breaking up?
__________________
1998 Firebird:buncha parts thats used to make it go fast..... not so much anymore. BAAAAAA!!!!!!
|
|
#20
08-21-2011, 08:23 AM
|
|||
|
|||
|
No it starts breaking up at anything over about 1/8th throttle.
Under a load or free revving. Pretty much everywhere in the rpm range as well. Now it's mainly just a stumble. No more backfiring. But, only when it's warm. If I start it up and hit the road the car is a freaking animal for about the first mile or so. Then it just turns into a giant poop machine and remains that way until it gets to be dead cold again.
__________________
The fleet...
|
 |
| Thread Tools | |
| Display Modes | |
|
|
Asteroids
Linear Mode
