1/2 shift hiccup

[dhorsman2000]

Just wondering if any of you guys have had this problem. Under a boost launch my truck will launch great and just before/during the 1/2 shift it will "hiccup" and fall on its face for just a second and then slowly come back around (maybe 2 seconds total time). It's almost like its getting KR but it's not detonating when this happens. Maybe hitting the rev limiter? if so how do I stop it from happening? I am in the process of saving for an ultimate, but right now just the stock chip. Any ideas? adjust the TV cable?

Thanks,
Dewey

 

[dgoodhue]

Re: 1/2 shift hiccup

Does your check engine light come on? My first guess would be overboost fuel cut off. The stock rev limiter is ~4800 rpm and the power will come back on ~4600 rpm.

 

[Robert Lone]

Re: 1/2 shift hiccup

That has to be absolute torture on the driveline.

I would suggest not doing it too much until you get it sorted out. Sounds like it could get real expensive, real quick.:2cents:

 

[nallj92]

Re: 1/2 shift hiccup

we'll check it out tonight if its ready for cruising. give me a call.

 

[dhorsman2000]

Re: 1/2 shift hiccup

sounds good, give me your # again (don't know if the girlfriend threw it or not) I have to wash it after work and should be ready to roll 'bout 8ish.....

 

[dhorsman2000]

Re: 1/2 shift hiccup

Does your check engine light come on? My first guess would be overboost fuel cut off. The stock rev limiter is ~4800 rpm and the power will come back on ~4600 rpm.

No, no check engine light when this happens...I am thinking I am hitting the rev limiter :rant: which pi$$e$ me off because it's really hard to get off the gas and back on again at the right time, if that is the problem