Idle Problems

kidsusukigsxr · 11-11-2008, 12:26 AM

Hello this is an 89 manual non-turbo supra. The last thing i did to it was a head gasket about 8 months back. It was successful. My first one ever.

The problem I have is that while stoped at the light the engine idle drops and the car seems like its going to stall out and the dash lights, just about to come on and the car kicks back on and idles little over 1000 rpm then repeats all over again. this happens steady over and over.

While driving this problem doesn't happen.

Any suggestions.

btwilson86 · 11-11-2008, 02:19 AM

Does it do from when you first fire the car up as well or only after you've driven it? It sounds like you may want to check to make sure that your vacuum lines are still connected properly and that they don't have any crakcs in them... I'm sure some other more experienced people will have more suggestions.

kidsusukigsxr · 11-11-2008, 11:06 PM

Thank I'm looking into that since your suggestion. Do you have or know where documents / photos are on vacuum line setup.

Busted Knuckles · 11-11-2008, 11:44 PM

Yup, sounds like a vacuum leak. Check all the lines.

btwilson86 · 11-12-2008, 05:17 AM

Sure, here it is: Vacuum Piping

This should give the location to most all of the lines, I think there might be a couple from some system not shown.

11-11-2008, 12:26 AM	#1
kidsusukigsxr 3" Exhaust Join Date: Dec 2006 Location: Orlando, Fl Posts: 52	Idle Problems Hello this is an 89 manual non-turbo supra. The last thing i did to it was a head gasket about 8 months back. It was successful. My first one ever. The problem I have is that while stoped at the light the engine idle drops and the car seems like its going to stall out and the dash lights, just about to come on and the car kicks back on and idles little over 1000 rpm then repeats all over again. this happens steady over and over. While driving this problem doesn't happen. Any suggestions. __________________ 89 Supra Non-Turbo, Manual, Blue 88 Supra Turbo, Auto, Black

11-11-2008, 02:19 AM	#2
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	Does it do from when you first fire the car up as well or only after you've driven it? It sounds like you may want to check to make sure that your vacuum lines are still connected properly and that they don't have any crakcs in them... I'm sure some other more experienced people will have more suggestions. __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

11-11-2008, 11:06 PM	#3
kidsusukigsxr 3" Exhaust Join Date: Dec 2006 Location: Orlando, Fl Posts: 52	Thank I'm looking into that since your suggestion. Do you have or know where documents / photos are on vacuum line setup. __________________ 89 Supra Non-Turbo, Manual, Blue 88 Supra Turbo, Auto, Black

11-12-2008, 05:17 AM	#5
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	Sure, here it is: Vacuum Piping This should give the location to most all of the lines, I think there might be a couple from some system not shown. __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

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11-11-2008, 11:44 PM	#4
Busted Knuckles 12psi boost Join Date: Dec 2007 Location: Atlanta Posts: 300	Yup, sounds like a vacuum leak. Check all the lines.