I need some GD help!!!!!!!!!!!!!

[dracing70]

Well I can t figure out the problem and im ready to sell this thing. The truck is lighting for about 50 feet then cutting out. I will post a link to the youtube video or you can look up greenwich pull 2.6. http://www.youtube.com/watch?v=_7_iWBYOSHQ&feature=youtu.be
I have logged the pulls and nothing really stands out to me except the throttle position does not seem accurate. Im getting three codes c0055 which is both rear wheel speed sensors and 02138,p2140 which is the an accelerator pedal sensor code. Does anyone think the tps is bad and if so will it cause the truck to cut out. Check out the video. I wasted over two bills this weekend dicking around and not making one good pass.

 

[Burn Down]

What does the log show the TPS doing? Hell yes if it looses TPS I think it would just revert back to idle or some sort "limp mode".

 

[Chevy1925]

Your describing something that is definitely pointing to your tps

 

[04D_MAX]

It's not running out of fuel, that's for sure . I would imagine if it loses the TP it would be the same as letting out of the throttle. That's if its reading a lower TP than it's suppose to. Just my :2cents:

 

[ecc_33]

It's not running out of fuel, that's for sure . I would imagine if it loses the TP it would be the same as letting out of the throttle. That's if its reading a lower TP than it's suppose to. Just my :2cents:

If its loosing throttle posistion it will default to no throttle.

 

[04D_MAX]

If its loosing throttle posistion it will default to no throttle.

Good to know.

 

[ecc_33]

I should prob rephrase that. My lb7 went to no throttle when lossing the throttle postion sensor. Not sure about yours but I would think it would be the same.

 

[SmokeShow]

Does it become limited to a certain RPM? Sorta sounds like it.

All limp modes are turned off in your tune?

Do you do your own tuning?

 

[sterlinLBZ]

My lbz threw the tps code a while back in the middle of a race and dropped down to 2800 rpms. Replaced the tps and hasn't acted up since.... Well except for cracking a piston lol

 

[dracing70]

yes fridays logs showed nothing higher than 60 percent throttle. now todays logs showed 100 then it spiked to zero then back up then? back to zero . it became very sparatic. is /it common for tp sensors to fail . and what about the rear wheel speed sensors.?? i doubt both sensors are bad.

 

[dracing70]

Does it become limited to a certain RPM? Sorta sounds like it.

All limp modes are turned off in your tune?

Do you do your own tuning?

no the tuning i am currently running is not mine. however i looked it over thinking a limiter was missed and everything looks fine. hopefully monday i will get some more help when business starts up again.

 

[dracing70]

My lbz threw the tps code a while back in the middle of a race and dropped down to 2800 rpms. Replaced the tps and hasn't acted up since.... Well except for cracking a piston lol

that is what mine seems to do . it feels like a limp mode

 

[sterlinLBZ]

that is what mine seems to do . it feels like a limp mode

I could let off the throttle and get back into it and it would wake up again but after a couple more feet would lose it again

 

[dracing70]

I could let off the throttle and get back into it and it would wake up again but after a couple more feet would lose it again

Mine will not wake up. It will stay the same all the way down the track. But it seems like its only in 4 lo. The throttle response in 4 lo seems excessively sluggish to me. I know Lly s r prone to some hesitation. But mine seems excessive.

 

[dracing70]

well after countless hours and thousands of dollars, its seems to have all come down to a bad maf sensor. can you believe that shit???

 

[Hot COCOAL]

:doh:
:banging:

It's always the simple stuff, glad you figured it out, now go tear up the track:thumb:

 

[TheBac]

well after countless hours and thousands of dollars, its seems to have all come down to a bad maf sensor. can you believe that shit???

Yes, yes I can. Sorry it cost you so much to find it.