Idling Funny?? like 2000

M

meze1111

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Sep 28, 2004

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Jul 12, 2005

#1

• Jul 12, 2005

• #1

I just recently got a 5.0 w/ no motor and built one and put it in its a 93 5.0 i put a new clutch in and a t-5. When the clutch is in the car idles at like 600 ish
but as soon as i let out the clutch the rpm's jump up to 2000 and the CEL comes on. Im not sure what this is but I know i dont have my VSS hooked up right now. Im wondering what else it could be. I havnt had a chance to get a code checked but i was wondering if anyone had this problem and might be able to help me w/ this.

thanks alot

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

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Jul 12, 2005

#2

• Jul 12, 2005

• #2

It could be the VSS, though folks have run w/o them and dont have issues. That is the direction I would lean though.

Getting the codes will be the first thing to do. A paperclip should do it.

Good luck.

Good luck.

 

M

meze1111

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Sep 28, 2004

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Jul 12, 2005

#3

• Jul 12, 2005

• #3

and the car is supercharged and i havnt tuned it yet.. nor drove it

 

M

meze1111

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Sep 28, 2004

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Jul 13, 2005

#4

• Jul 13, 2005

• #4

No one else got a clue?

 

Curse

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Apr 8, 2004

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El Paso, TX

Jul 14, 2005

#5

• Jul 14, 2005

• #5

Did you recently add a TB? Did you reset the TPS to the right setting?

 

HISSIN50

"How long does it take to get help in here?

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Jul 14, 2005

#6

• Jul 14, 2005

• #6

That whole part about being a forced induction vehicle is good to know

More info on the combo might help (I said might). Like how much boost are you running. If it is a lot, what are you doing with crankcase ventillation, etc.

Good luck.

 

M

meze1111

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Sep 28, 2004

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Jul 14, 2005

#7

• Jul 14, 2005

• #7

Well the car i just put a new clutch in and ive got the supercharger hooked up. Ive driven the car .. very little just to move it a few miles. Never tried giving it any gas just drove normal. I plan on taking the car to have it dyno tuned as soon as its painted. I know i dont have a VSS sensor yet. I went to auto zone to see if they can do a CEL check but they cant do it because its to old. I was wondering if anyone on here might know what i can do about that. I havnt tried tuning the car myself im not that familiar with it yet. Im really just wondering why the car might start and idle just fine w/ the clutch in and when i let out the clutch the CEL comes on and the idle jumpes from 600 to 2000 and stays. After i get past that point i just plan on getting it dyno tuned but i'd like to fix that first so that it doesnt interfear with the dyno tune.

 

HISSIN50

"How long does it take to get help in here?

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Jul 14, 2005

#8

• Jul 14, 2005

• #8

I hear you all the way on fixing this and having it running halfway decently for the tune.
Here is a post by Jrichker about pulling the codes yourself. That might help with figuring out the issue. I Know a few others have had similar symptoms at times, but I am not sure I ever heard a definitive solution.

Sorry to not have more info. Maybe codes will help. Good luck bud.

 

M

meze1111

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Jul 14, 2005

#9

• Jul 14, 2005

• #9

Thats good to know there i'll try that as soon as i can get ahold of a voltmeter. I will also try puttin in the VSS. I built the motor from scratch so it needs some tuning. I have a 70mm TB and Trackheat upper lower bigger inj and pump It has the msd 6BTM and FMU. So im sure there's things i need to do. I know how to put it together lol........ but tuning is another story.