Very low Idle on 98 running 6lb whipple ctsc.

[ffffanman]

New guy in town came over with concerns his whipple was going to lift off to the moon. You know that gravel sound when your engine is Idle'n real low.
We checked out the oil level in Mr. Whipple and topped it slightly up, it was half down on the dip stick.
I asked him what his tach read and it was like 400-500 or so, hard to read it at that low on our tachs.
I said, thats your problem right there, I asked him to rev it up to 850-900 and the noise was gone.
What could cause his engine to run so low rpm.
He states it just happened a while ago that this noise started, so
that must coincide with a drop in rpm for some reason.
I don't have a code reader but we can get one I guess.
Let me know what we should check.
Thanks
Trev

 

[warrenw]

Trev,
you can borrow my code reader, but if the "CHK ENG" light is not on, there is really nothing to read.

 

[ffffanman]

he says it comes on here and there, maybe he's talking on Jasper Avenue, then again over on Whyte Avenue.
And thanks Warren, you'll have to meet him, next week.
We can come cruise over or something like that.
He is a very nice man, very humble and dresses well.....lol.
Story behind that, shirts him and I wear......
He owns a club downtown, so we can go party big time...
Trev

 

[Larry Bastanza]

I think it needs a throttle body cleaning

Regards,
LarryB

 

[ffffanman]

Thanks Larry, Can i do that on a 98, Just spray inside all around, I think I was drinking coffee and trying to get the other people to be quiet under the purple nsx when you where giving your tech tip on this at nsxpo in Portland.
Trev
Can you take a look at this as well.
http://www.nsxprime.com/forums/showthread.php?t=122014