Stumble help.

Guest

The 9c1 has a small issue. When you give it throttle, it will stumble and then clear out and go. This is just a slight stumble, but still a stumble. I know the opti is good. Pretty sure the wires are. I left the plugs in. Any Ideas?

Posts : 4294 Join date : 2009-12-16

With the TPS being a potentiometer, it can get dead spots. It may be stumbling at a spot it consistantly rides at. Check its resistance with OEM specs

Guest

It only does it in gear driving. In park, it revs fine. I probably know the answer, but my head is so full crap, I can't think.

Subject: Re: Stumble help. Sat Oct 23, 2010 8:59 pm

Light throttle? EGR?

Regular throttle? TPS? IAC reset? TBS cleaning? Plugs? Vacuum leaks?

Posts : 4294 Join date : 2009-12-16

toomanytoyz wrote:: Light throttle? EGR?

Regular throttle? TPS? IAC reset? TBS cleaning? Plugs? Vacuum leaks?

yes

Guest

MASShole9C1 wrote:

toomanytoyz wrote:: Light throttle? EGR?

Regular throttle? TPS? IAC reset? TBS cleaning? Plugs? Vacuum leaks?

yes

BINGO! Thanks guys. Wink

Posts : 4294 Join date : 2009-12-16

IMPALADAKID wrote:

MASShole9C1 wrote:

toomanytoyz wrote:: Light throttle? EGR?

Regular throttle? TPS? IAC reset? TBS cleaning? Plugs? Vacuum leaks?

yes

BINGO! Thanks guys. Wink

all in a days work

Guest

toomanytoyz wrote:: IAC reset?

Is this something I can do? What is involved?

Posts : 4294 Join date : 2009-12-16

Im guessing you need a scan tool

http://www.gnttype.org/techarea/faq/IACresetscan.html

Subject: Re: Stumble help. Sat Oct 23, 2010 9:46 pm

IMPALADAKID wrote:

toomanytoyz wrote:: IAC reset?

Is this something I can do? What is involved?

http://shbox.com/1/4th_gen_tech2.html#iac_reset
Depress accelerator slightly
Start engine, then release accelerator pedal, run engine for 5 seconds
Turn ignition "OFF" for ten seconds
Restart engine and check for proper idle operation

Subject: Re: Stumble help. Sat Oct 23, 2010 9:49 pm

IMPALADAKID wrote:

toomanytoyz wrote:: IAC reset?

Is this something I can do? What is involved?

I don't remember, but I know it's quick and easy. Normally that's for an idle issue anyways, but figured that it could be something worth checking if plugs and a TB service didn't clear it up... Wink

EDIT: See, I walk away for a couple minutes before I hit send and someone figured it out already... Very Happy

Posts : 4294 Join date : 2009-12-16

mean ss wrote:

IMPALADAKID wrote:

toomanytoyz wrote:: IAC reset?

Is this something I can do? What is involved?

http://shbox.com/1/4th_gen_tech2.html#iac_reset
Depress accelerator slightly
Start engine, then release accelerator pedal, run engine for 5 seconds
Turn ignition "OFF" for ten seconds
Restart engine and check for proper idle operation

LOL i just got done reading that study

...im dumb Question

Subject: Re: Stumble help. Sat Oct 23, 2010 9:58 pm

MASShole9C1 wrote:

mean ss wrote:

IMPALADAKID wrote:

toomanytoyz wrote:: IAC reset?

Is this something I can do? What is involved?

http://shbox.com/1/4th_gen_tech2.html#iac_reset
Depress accelerator slightly
Start engine, then release accelerator pedal, run engine for 5 seconds
Turn ignition "OFF" for ten seconds
Restart engine and check for proper idle operation

LOL i just got done reading that study

...im dumb Question

what you had posted is more for adj. the throttle blades by IAC counts but we want them in the 30's

Posts : 4294 Join date : 2009-12-16

I figured as much. I took a quick glance, posted, then found what you posted

Guest

Ok
I found the IAC valve was no good. I replaced it with another one I got from crovo, along with completely rebuilding the TB out of spare parts. Now she runs like a champ. cheers

Guest

IMPALADAKID wrote:: Ok
I found the IAC valve was no good. I replaced it with another one I got from crovo, along with completely rebuilding the TB out of spare parts. Now she runs like a champ.

I was wrong. Wound up being the EGR after further diag.

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