Problem at WOT at high RPMs
Thread Starter
On The Tree
Joined: Mar 2006
Posts: 107
Likes: 0
From: Los Angeles, CA
Problem at WOT at high RPMs Well my car runs good when cruising or even at part full throttle, but it seems when i slam the throttle and the downshifts it starts picking up, but right about maybe 5k all of a sudden it shuts down and after fires pretty bad. So then i have to stop the car and start it up again and it starts up just fine. I dont know what it can be, im maybe thinking lack of fuel?maybe bigger injectors or fuel pump(oh yeah replaced fuel pump about 6 months OEM). NE feed back will be well appreciated. Thanks.
P.S. Check sig for mods.
P.S. Check sig for mods.
Thread Starter
On The Tree
Joined: Mar 2006
Posts: 107
Likes: 0
From: Los Angeles, CA
well as far as my ignition goes i replace most of it about 8 months ago brand new oem coils, new msd wires, and oem spark plug wires andit all seems to be in good cond. Dont u think if it was ignition it would act up all the time not only at high rpms? Im going to try to tape that fuel pressure gage and see if fuel press. drops should there be ne give on press.?
Cat overtemp protection can dump a lot of fuel.
If you have other fueling errors (like excessive
+ trims, etc.) this can compound the overfueling.
COT doesn't take too much time-at-load to wake
up but a long time to deactivate.
If you have other fueling errors (like excessive
+ trims, etc.) this can compound the overfueling.
COT doesn't take too much time-at-load to wake
up but a long time to deactivate.
Thread Starter
On The Tree
Joined: Mar 2006
Posts: 107
Likes: 0
From: Los Angeles, CA
well i dont have a scanner to post my tune slip, but ill try to get it on here. As far as cats go well i dont have NE on there i had them cut off and had the rear o2s deleted when tuned. i checked my fuel pressure. it was at about 55 psi and drop to about 50 at wot. I also noticed that when i take of from a dead stop at WOT the car will respond fine through all the shift, but lets say im cruing at about 60 mph then gun it, so the car downshifts to 2nd as it starts picking up thats when it takes a **** on me. So its mostly on the hard downshifts when this happens
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Had this happen on a car where the "Bad VSS RPM" cut off was lower than the other spark cut controls, causing the motor to die. Backfire and would run fine after restarted-
And another where The Battery would slowly come out of the tray after a hard downshift and continued accel
And another where The Battery would slowly come out of the tray after a hard downshift and continued accel
