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09-08-2011, 02:34 AM
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Stock
Join Date: Oct 2010
Location: houston, Tx
Posts: 24
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Idle too high
Okay I have another one for you guys. My 1991 turbo sits at 1500- 1600 Rps at idle how can I ChangE it to be a oem specks of 600 to 700 rpms? I can't locate the idle screw need some help.
Thanks Aaron
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91 TURBO TARGA TOP 5 SPEED PEARL WHITE.... UNDER CONSTRUCTION... |
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09-08-2011, 03:06 AM
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#2 |
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3" Exhaust
Join Date: Jul 2011
Location: Titusville, PA
Posts: 54
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There's an adjustment screw on the throttle body.
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"Faster, faster, faster, until the thrill of speed overcomes the fear of death." – Hunter Thompson "It is amazing how many drivers, even at the Formula One Level, think that the brakes are for slowing the car down." – Mario Andretti "Speed has never killed anyone, suddenly becoming stationary… that’s what gets you." – Jeremy Clarkson "When I raced a car last it was at a time when sex was safe and racing was dangerous. Now, it’s the other way round." – Hans Stuck |
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09-08-2011, 03:30 AM
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#3 | |
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Super Moderator
Join Date: May 2007
Location: Billings, Montana
Posts: 1,034
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Quote:
Everything on these cars is computer controlled, so if it's idling high there is a problem somewhere. Check the simple stuff like ignition timing, cam timing, vacuum leaks. Check for engine codes (just because there isn't a code showing doesn't mean there isn't one stored). Post back with what you find
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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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09-08-2011, 03:42 AM
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Lexus & 550's
Join Date: May 2010
Location: Baltimore
Posts: 526
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Check the tps that's what was causing my high idle.
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09-08-2011, 03:51 AM
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#5 |
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Stock
Join Date: Oct 2010
Location: houston, Tx
Posts: 24
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The timming is set perfect. But the tps might be the problem this is a jam engine so it could have been tampered with. I know it's electronically finds the best timing and idle for the car but 1600 is way too high how do I check it using the diagnostic plug what do I jump in the diagnostic plug to find the problem. Lol kinda do t know how to read it either I'm a newbe guys.
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91 TURBO TARGA TOP 5 SPEED PEARL WHITE.... UNDER CONSTRUCTION... |
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09-08-2011, 04:54 AM
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#6 |
 Toyota Racing Development Join Date: Apr 2007
Posts: 5,038
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See the MKIII FAQ section for the thread on how to check codes.... Generally a good place for a newbie to spend a LOT of time.
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