new supra owner. with some problems

Rug · 05-13-2009, 04:14 AM

Just bought an 89 7mge and i'm having idleing problems. when i start the car it'll idle starting at around 850 and shoot up to 3000 rpms at a steady rythm. any suggestions?

azerty · 05-13-2009, 04:19 AM

It is supposed to iddle at 800 rpm.
So no wories there !

Rug · 05-13-2009, 04:38 AM

I'm trying to figure out why its going back and forth between 800 and 3000

dunewarz · 05-13-2009, 08:50 AM

Check you vacuum lines first, theres a thread here somewhere showing you all the vacuum line locations. Then you want to check the timing. After that check your TPS to make sure it's still operational and sitting in the right position. Check the TPS screw as well and make sure it's not twisted up too high. Lastly check your ISCV. Just pinch it a bit see if it brings down the engine rpm a bit. Doesn't mean it's the ISCV, it's just to see how the engine reacts.

azerty · 05-13-2009, 10:53 AM

Also try to check if the MAF sensor is wired.
When you drive it is all ok?

Rug · 05-15-2009, 06:16 PM

I haven't driven it yet i picked it up for $500 about a month ago. It's in great shape except for the idling. I'm checking the vacuum lines and replacing the ones that need replaced this weekend. There's also a few sensors that that look like they need replaced too. Hopefully I'll have it running right by the end of the weekend. I'll keep you guys updated thanks for the help.

05-13-2009, 04:14 AM	#1
Rug Stock Join Date: May 2009 Location: San Diego, CA Posts: 5	new supra owner. with some problems Just bought an 89 7mge and i'm having idleing problems. when i start the car it'll idle starting at around 850 and shoot up to 3000 rpms at a steady rythm. any suggestions?

05-13-2009, 04:19 AM	#2
azerty 3" Exhaust Join Date: Sep 2007 Location: Romania Posts: 96	It is supposed to iddle at 800 rpm. So no wories there ! __________________ 1988 yelow manual turbo targa HKS ssqv bov Hose Techniques silicon hoses Forge manual boost controller boost gauge K&N FIPK ACT clutch kit HD-G6 Fidanza lightened flyweel 550cc RC Injectors 255lph Walbro Fuel Pump LIPP Lexus AFM Replica 3" turbo back echaust with divorced downpipe and no cats. Aeromotive FPR Aem Uego Wideband Gauge+O2 sensor

05-13-2009, 10:53 AM	#5
azerty 3" Exhaust Join Date: Sep 2007 Location: Romania Posts: 96	Also try to check if the MAF sensor is wired. When you drive it is all ok? __________________ 1988 yelow manual turbo targa HKS ssqv bov Hose Techniques silicon hoses Forge manual boost controller boost gauge K&N FIPK ACT clutch kit HD-G6 Fidanza lightened flyweel 550cc RC Injectors 255lph Walbro Fuel Pump LIPP Lexus AFM Replica 3" turbo back echaust with divorced downpipe and no cats. Aeromotive FPR Aem Uego Wideband Gauge+O2 sensor

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05-13-2009, 04:38 AM	#3
Rug Stock Join Date: May 2009 Location: San Diego, CA Posts: 5	I'm trying to figure out why its going back and forth between 800 and 3000

05-13-2009, 08:50 AM	#4
dunewarz 3" Exhaust Join Date: May 2009 Location: WhiteBear Posts: 54	Check you vacuum lines first, theres a thread here somewhere showing you all the vacuum line locations. Then you want to check the timing. After that check your TPS to make sure it's still operational and sitting in the right position. Check the TPS screw as well and make sure it's not twisted up too high. Lastly check your ISCV. Just pinch it a bit see if it brings down the engine rpm a bit. Doesn't mean it's the ISCV, it's just to see how the engine reacts.

05-15-2009, 06:16 PM	#6
Rug Stock Join Date: May 2009 Location: San Diego, CA Posts: 5	I haven't driven it yet i picked it up for $500 about a month ago. It's in great shape except for the idling. I'm checking the vacuum lines and replacing the ones that need replaced this weekend. There's also a few sensors that that look like they need replaced too. Hopefully I'll have it running right by the end of the weekend. I'll keep you guys updated thanks for the help.