Intake problems again....

[New to the SHO]

I took off the intake of my SHO... its a gen 1. I put it all back on but but when i turn it on it wont idle I have to put my foot on the gas. When I drive it it studders until i hit about 2600 RPM's. Ive checked and checked and I cant find any hoses or undone wires. Im pretty sure it is a vacuum line because the same thing happened to my brothers ******.. Does anybody have any advice???

 

[SHO--ripper]

Did you just pull it off or did you rebuild it?
If it was just removed check for the IAC plug, backwards intake to head gaskets, or a pinched butterfly vac line.
If you rebuilt it check the IAC gasket.

 

[New to the SHO]

wheres the IAC Plug at? I didnt rebuild it I just took off the intake and cleaned it... so your bittersweet sho, the third turbo SHO am I correct?

 

[Mr Anonymous]

It's probably a ground. Check the grounds and make sure the bolts securing the crossover tube to the surge tanks are in place.

 

[luigisho]

After you check for the ground look at the back of the intake and make sure you didn't pinch a vacuum line there somewhere. I think way back when I first started messing with these cars a similar thing happenend to me. I reassembled the intake and really torqued a small hose between the intake and the head that I couldn't see until I pulled the intake back off in frustration trying to find the problem.

 

[HyperMikeD!]

You might want to adjust the TPS voltage.

 

[bmcreider]

When that hapenned to me I didn't torque down the bolts where the runners connect to the heads, at all, and it leaked through there causing it to not idle and then around 2600rpms as you say it ran fine.

 

[platoribs]

When that hapenned to me I didn't torque down the bolts where the runners connect to the heads, at all, and it leaked through there causing it to not idle and then around 2600rpms as you say it ran fine.

Same here, additionally if you idle it for a while check to see if you cats are glowing all nice cherry red hotttt. clear sign of leaking intake, or so I've been told!

 

[shoebilly]

Take a look at the vacume lines that actuate the secondaries, these can become hard and split at the connections causing a vacume leak. You may be able to just look at the secondary vacume servo's and see a split in that location. But inspect all the vacume lines including the for the vapor canister that seems become damage from vapor and turns into carbon powder.