riv91
Special
Name : Matt
Age : 35
Location : Binghamton NY
Joined : 2008-01-25
Post Count : 8
Merit : 0
 | | Subject: High idle Wed Mar 19, 2008 7:24 pm | |
| today while I was driving i noticed the service engine soon light came on and when i came to a stop at the light it was idling high around 1200 so i went to auto zone to get one of them code keys to put into the port to check the code but now the engine light is off and idling back to normal ....Any ideas on what caused this high idle to come then go away.... its a 91 with about 51 thousand miles any help would be appreciated | |
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AA
Administrator
Name : Aaron
Age : 47
Location : C-bus, Ohio
Joined : 2007-01-13
Post Count : 18452
Merit : 252
| | Subject: Re: High idle Wed Mar 19, 2008 7:53 pm | |
| Did the light go out right after you connected the code key? _________________ '05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30
3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails
KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers
EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch^^^ SOLD ^^^  '70 Ninety-Eight Holiday Coupe 455cid • 116k miles^^^ SOLD ^^^ | |
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deekster_caddy
Master
Name : Derek
Age : 52
Location : Reading, MA
Joined : 2007-01-31
Post Count : 7717
Merit : 109
| | Subject: Re: High idle Wed Mar 19, 2008 10:54 pm | |
| could be a problem with the IAC. I've forgotten most of my Gen IV Riv Troubleshooting. (I used to have an '86)
Does it have the CRT touch climate/radio display? If so you can read the sensor output from everything in diagnostic mode... | |
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riv91
Special
Name : Matt
Age : 35
Location : Binghamton NY
Joined : 2008-01-25
Post Count : 8
Merit : 0
| | Subject: Re: High idle Wed Mar 19, 2008 11:08 pm | |
| The light went out on the way to go get the code key ... I still put the code key in and no codes showed up ....the service engine soon just kept on blinking so i figured that it couldn't find any codes cause the light went out........and it doesn't have the touch screen | |
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Mr.Riviera
Expert
Name : Matthew
Age : 38
Location : Florida
Joined : 2007-01-17
Post Count : 4394
Merit : 101
| | Subject: Re: High idle Wed Mar 19, 2008 11:39 pm | |
| like derek said, there could be a problem with the IAC valve. it may be getting stuck b/c of dirt.
btw a blinking SES light is very bad. it means pull over and turn the car off! _________________ 1996 with 254k miles, L32 4" FWI -> ported N* -> Ported Gen V w/3.0" Pulley, Stage 3 Phenolic I/C, ZZP FMHE, 1.84 RR, Headers and 3" pipe to mufflers, F-body brakes, and lowered on Eibachs. -RIP AMG C400 White on black. Stage 2 w/E30 - 11.9@117 -daily  | |
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riv91
Special
Name : Matt
Age : 35
Location : Binghamton NY
Joined : 2008-01-25
Post Count : 8
Merit : 0
| | Subject: Re: High idle Thu Mar 20, 2008 12:16 am | |
| I will check out the iac ..... yea i meant that it kept on blinking while the code key was in i guess it suppose to blink 3 times then suppose to bring up a series of codes but it just kept on blinking so i figured it couldn't find anything because the engine light went out before i put the code key in | |
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