Immediate help requested

[maclem8223]

Ok this just happened and I'm not near home I pulled up to a light cars idling real rough. I puuled over and changed cp's out thinking that was the culprit right away nothing...when I start the car it revs up to like two grand and eventually settles down to normal but it's still rough and only holding ten vac. MAF or something else...

[aaaudiprotein]

vac leak/bad maf...
unplug your maf and see if it goes away

[maclem8223]

I'm thinking maf as well I'll check in a bit we came out for dinner might as well now especially since it's cold out

[onceover]

vac leak

mhmm

[7speed]

yep

[maclem8223]

A vac leak would make it rev up at start???

[maclem8223]

On throttle I was still hitting full boost it was just hesitant

[onceover]

when i had my vac leak my car would rev up and down from 1k to 2k

[maclem8223]

when i had my vac leak my car would rev up and down from 1k to 2k

Constantly or just at startup

[onceover]

mostly at stop lights when the engine was warmed up

[maclem8223]

Will it hurt it to drive home twenty thirty minutes

[F16HTON]

Not likely it is the MAF, especially if you are seeing -10 vacuum at idle. Most likely you blew the suction jet pump or some other type of vacuum/boost leak.

Unplug your MAF and you will be able to drive the car.

[maclem8223]

That's what I wanted to hear

[maclem8223]

Unplugged maf still running like crap.. Does it take awhile to adjust

[A4natomical]

Most likely a vaccum leak. I forgot a worm gear on my DV and the compressor side blew off and the idle was crap and would stall out.
Quick easy fix.

[absolutegtr]

Definitely a vacuum leak. When I had forgot to plug the vac port on the Intake manifold, the car would "self" rev to 3500 RPM and then settle back down and then repeat!

[maclem8223]

Definitely a vacuum leak. When I had forgot to plug the vac port on the Intake manifold, the car would "self" rev to 3500 RPM and then settle back down and then repeat!

And that's exactly what it's doind. I didn't want to spend my Saturday working on the car besides the tranny mount; oh well it sounds like a great time to get rid of all those extra hoses and secondary air crap under the hood. Either way thanks everyone for your help; she made it home and it is definitely a vac leak the hunt will begin tomorrow.

[aaaudiprotein]

first, look at those check valves, they brake a lot.

[quat]

mine has a vacuum on -10 and it doesn't do any of that

[thecheda]

Same situation happened to me last year. Turned out it was a suction jet pump. Dealer replaced under warranty.....

[maclem8223]

mine has a vacuum on -10 and it doesn't do any of that

It should hold -20 at idle.

[absolutegtr]

mine has a vacuum on -10 and it doesn't do any of that

I pull a solid 22inHG at idle and about 24-26inHg on decel.....

[maclem8223]

Yeah it should definitely be holding more than -10

[maclem8223]

I can't find any leaks this is annoying anyone with experience with locating leaks want to call me and point me to some trouble spots I'm all ears 812-604-5650

[maclem8223]

No throttle response either

[onceover]

i doubt its the same problem i had, but out of curiousity try to take off the oil filler cap while the engine is running, if theres loads of suction you may be in luck

[Raus]

I had the #11 valve break apart on me once



A second time one of the intercooler hoses popped off. Both times, I had no vaccuum/boost, car ran very rough with barely any throttle response. It stalled pretty much everytime I let off the throttle but idle never jumped up and down like you guys described.

[maclem8223]

So there is NO leaks...tennis ball method visually inspected each hose, and pretty much took the vac system out and back in trying to find it. I'm down to probably a suction jet pump or another type of valve which your not going to tell from a boost leak. I'm going to drink some beer; I'm done for the day...it won't fix the car but I'll sure as hell feel better.

[dirtybrd]

Beer FTW!

[maclem8223]

So, after reading these three threads severeal times and finding NO leaks in the actual lines...I'm hoping removing all this crap can't hurt. any thoughts...
http://www.audizine.com/forum/showthread.php?t=235106
http://www.audizine.com/forum/showth...hlight=in-line
http://www.audizine.com/forum/showth...ight=n112+n249

[maclem8223]

No one...any other thoughts on what the problem could be or is everyone convinced it is something to do with a vaccum or boost leak?