engine trouble, figured it out

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Haganracing
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engine trouble, figured it out

Post by Haganracing » Thu May 27, 2010 4:26 pm

Ok guys.. I am getting annoyed at my car now..

My car has been running great ever since i did the cam, headers, intake manifold.

Well today I stopped at a light and I always put my car in neutral at the light just because thats what I do.. Well when i did that, my car surged a little past 2000rpm and for about 4-6 seconds and then went down and idled at 1300rpm and sounded like a real cam.. But this shouldn't be happening..

Anyone have any clue one what this could possibly be?

Also when im driving and giving it gas, its fine.. But when I take my foot off the gas (lets say at 3k) it takes a few seconds till the rpm goes back down to where it would be if I had let off the gas right away.

:banghead:





EDIT: Figured it out.. Intake manifold hose to the throttlebody.
Last edited by Haganracing on Thu May 27, 2010 7:33 pm, edited 1 time in total.
occasional demons wrote:So maybe a FuzzyDanteHagan sammich might just beat a FuzzyHagan. :-k
Danteneon wrote:My advice is to fight those urges and enjoy the fact that you have both X and Y chromosomes. And an SRT. And your hand. You don't need a girl.
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heydockyle
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Post by heydockyle » Thu May 27, 2010 4:49 pm

Vac leak? TPS messing up? VSS working correctly?
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Post by Haganracing » Thu May 27, 2010 4:56 pm

I checked for vacuum leaks and it all seemed fine.

Maybe the TPS is messing up, but when I have it in drive at a stoplight it seems fine..
occasional demons wrote:So maybe a FuzzyDanteHagan sammich might just beat a FuzzyHagan. :-k
Danteneon wrote:My advice is to fight those urges and enjoy the fact that you have both X and Y chromosomes. And an SRT. And your hand. You don't need a girl.
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occasional demons
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Post by occasional demons » Thu May 27, 2010 5:02 pm

Possibly the "transmission range sensor" switch is bad. IIRC the ATX's have a sensor that tells the pcm when it is in gear, so it can adjust the idle speed to keep it from stalling. If it thinks it's in gear, it will keep the idle high. The neutral position might not be breaking contact completely.
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Probably shouldn't listen to anything your penis says, that guy's a dick.
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Post by Haganracing » Thu May 27, 2010 5:06 pm

Hmm

I have also noticed when I turn the car on.. It starts and then engine RPM goes down real low and will shut off if I don't give it gas to keep the rpms up at first.

That started happening a few days before this "issue". Maybe that has something tied to it..
occasional demons wrote:So maybe a FuzzyDanteHagan sammich might just beat a FuzzyHagan. :-k
Danteneon wrote:My advice is to fight those urges and enjoy the fact that you have both X and Y chromosomes. And an SRT. And your hand. You don't need a girl.
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heydockyle
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Post by heydockyle » Thu May 27, 2010 5:11 pm

Mine did that when the map sensor was dirty.

I would suggest taking both sensors off the tb and cleaning them, and taking the map sensor out and cleaning it.


Also wouldn't the VSS do that if it's messing up and thinking it's not coming to a stop?
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occasional demons
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Post by occasional demons » Thu May 27, 2010 5:19 pm

heydockyle wrote: I would suggest taking both sensors off the tb and cleaning them,

Also wouldn't the VSS do that if it's messing up and thinking it's not coming to a stop?
Not sure how you would clean the TPS. The IAC, yes, clean, and spray lube it.

If the VSS was showing movement, the speedometer, and odometer would be also showing movement. I think by the nature of the VSS, it would be nearly impossible to fail that way.
Bill
Probably shouldn't listen to anything your penis says, that guy's a dick.
Patience, of course, is a very powerful weapon, but sometimes I start to regret that it is not a firearm.
Too much time spent here is a sign of a bad case of Ownaneonvirus.

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1999 neon coupe 2.4 swap
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heydockyle
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Post by heydockyle » Thu May 27, 2010 5:21 pm

Okay, well clean the connections on the tps.
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Post by ZeroChad » Thu May 27, 2010 5:26 pm

I could see this being IAC related. Give her a good cleaning.
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Post by Haganracing » Thu May 27, 2010 5:27 pm

I am going to clean her up see what happens.

:crossfinger:

Edit:

I cleaned out the tps (i guess, the one ontop of the TB) and it was dirty.. Didn't work though..
occasional demons wrote:So maybe a FuzzyDanteHagan sammich might just beat a FuzzyHagan. :-k
Danteneon wrote:My advice is to fight those urges and enjoy the fact that you have both X and Y chromosomes. And an SRT. And your hand. You don't need a girl.
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heydockyle
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Post by heydockyle » Thu May 27, 2010 7:49 pm

Haganracing wrote:I am going to clean her up see what happens.

:crossfinger:

Edit:

I cleaned out the tps (i guess, the one ontop of the TB) and it was dirty.. Didn't work though..
IAC is ontop of tb.
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Haganracing
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Post by Haganracing » Thu May 27, 2010 7:58 pm

Oh then thats what i cleaned. It was dirty lol
occasional demons wrote:So maybe a FuzzyDanteHagan sammich might just beat a FuzzyHagan. :-k
Danteneon wrote:My advice is to fight those urges and enjoy the fact that you have both X and Y chromosomes. And an SRT. And your hand. You don't need a girl.
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Post by gilly02le » Fri May 28, 2010 11:31 am

the iac gasket is kinda crappy as well. Be sure to add some gasket maker on that when you put it back in, or they tend to leak.
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Post by Haganracing » Fri May 28, 2010 11:56 am

Yeah, it was pretty dry. I didn't mess with it LOL


The rubber bellows tube has a cut in it.. Causing the vacuum leak.. So atleast that problem is solved.

Thanks for all your help guys!

:thumbup:
occasional demons wrote:So maybe a FuzzyDanteHagan sammich might just beat a FuzzyHagan. :-k
Danteneon wrote:My advice is to fight those urges and enjoy the fact that you have both X and Y chromosomes. And an SRT. And your hand. You don't need a girl.
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occasional demons
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Post by occasional demons » Fri May 28, 2010 12:04 pm

gilly02le wrote:the iac gasket is kinda crappy as well. Be sure to add some gasket maker on that when you put it back in, or they tend to leak.
The earlier gaskets are formed o rings. They are fairly fail proof. Then they cheaped out.
Bill
Probably shouldn't listen to anything your penis says, that guy's a dick.
Patience, of course, is a very powerful weapon, but sometimes I start to regret that it is not a firearm.
Too much time spent here is a sign of a bad case of Ownaneonvirus.

2000 Neon MTX swap with '02 R/T PCM
1999 neon coupe 2.4 swap
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