Idle problem caused by new throttle body

[BDRs02BlkGT]

Need help with idle problem

Well I seem to be having a idle problem with my 70mm throttle body installed. When I start the car it will jump up to 2000 rpms and stay there for a few minutes and then settle down to 1400 rpms. Then when you just tap the gas it jumps back up to 2000 again and does the same thing all over again. While driving it runs like a Auto in the fact that you can't kill it. It will not go below 2000 rpms. I've checked the throttle body and its not stuck on anything and its installed correctly. I even replaced the TPS and this didn't help. So tonight I reinstalled the stock throttle body and everything went back to normal. The idle is back to 1000 - 1100 rpms and doesn't stick or hang when you tap the gas. I installed the 70mm throttle body and the plenum at the same time. If anyone has any ideas I would really appericate the help.

 

[BDRs02BlkGT]

Anyone have any ideas?

 

[2001Saleen181]

Reset the computer by disconnecting the battery for at least 5 mins and tap on the brake so there is no residule energy left in the system.

 

[DrK MrK iV]

Yes. Reset the battery. Which type of T/B did you go with?

 

[2001Saleen181]

bbk 75 mm
Check your linkage, or your cruise cable. My was not installed correctly.

 

[BDRs02BlkGT]

Reset the computer by disconnecting the battery for at least 5 mins and tap on the brake so there is no residule energy left in the system.

I did reset the computer and I did tap on the brake but I don't think I let it set for 5 mins. After I connected the battery it ran like the stock one until I took it out for a test drive then it went right back to what it was doing before. Do you think it needs to set for 5 mins before I reconnect the battery?

 

[BDRs02BlkGT]

bbk 75 mm
Check your linkage, or your cruise cable. My was not installed correctly.

That was one of the first things I thought of and I went back and checked my work just in case I messed something up but it was installed correctly and nothing was in the way.

 

[Jinx]

Anyone have any ideas?

If there's an idle adjuster screw, you may want to check that. turn it to where it just touches the linkage, then back it off 1/4 to 1/2 a turn. It may be that the screw is in to far and won't let the idle drop to the normal level.

 

[Skud]

Did you happen to do the gas pedal mod to take up the slack in the cable?

Riley

 

[BDRs02BlkGT]

If there's an idle adjuster screw, you may want to check that. turn it to where it just touches the linkage, then back it off 1/4 to 1/2 a turn. It may be that the screw is in to far and won't let the idle drop to the normal level.

I will try that this weekend. I was thinking the same thing but was just a little hesitant to mess with the adjuster screw because everyone tells you to leave it alone. Thanks for the help

 

[BDRs02BlkGT]

Did you happen to do the gas pedal mod to take up the slack in the cable?

Riley

No I didn't but I'm not sure I even know how to do this mod. Do you have a link to how to this mod. If not I will do a search and see what I can find.

 

[Jinx]

I will try that this weekend. I was thinking the same thing but was just a little hesitant to mess with the adjuster screw because everyone tells you to leave it alone. Thanks for the help

IF it turns out to be the adjuster screw, if I remember correctly, you can use a feeler guage to back it off the correct distance. I think it was something like ".010 or .001 of an inch" not sure which and I threw away my instuctions 6 months ago.