Author Topic: High Idle (Read 2162 times)

oddball · « **on:** Jan 22, 2008, 05:48:27 PM »

My 83 truck is idling high, around 12-1300 rpms. I couldn't adjust the idle up or down, so for just for the hell of it I put a different carb on there and its doing the same thing. The timing seems to be on, Ive checked it a million times. When I pull the two vacuum lines and plug them it gets close to normal but as soon as I reconnect them it goes back up. Whats going on?

kneedownnate · « **Reply #1 on:** Jan 22, 2008, 08:01:21 PM »

Vacuum leak? Are you totally sure your throttle linkage isn't just hanging up?

oddball · « **Reply #2 on:** Jan 22, 2008, 08:06:51 PM »

It could be a vacuum leak. It idles fine when cold but as it warms the rpms go up

Steve_925 · « **Reply #3 on:** Jan 22, 2008, 09:04:38 PM »

i wish my idle was 12-1300 mine is more like 1500. you could retard the timing, not the best thing to do but could help

RN37DD · « **Reply #4 on:** Jan 23, 2008, 08:42:38 AM »

when you plug your vacuum lines in dose your timing change? try to find out which vacuum line is effecting your idle speed. could be a vacuum leak or it could even be that your throttle positioner is always getting vacuum.

oddball · « **Reply #5 on:** Jan 23, 2008, 07:25:01 PM »

Well it ended up being the throttle pulley thing that the cable attaches to, It kept sticking

RN37DD · « **Reply #6 on:** Jan 24, 2008, 08:46:33 AM »

that well do it.. mine was so worn out it had dug a groove in the shaft and enlarged the hole. i made some bushings out of copper tubing to take out the slop. works fine now.

kneedownnate · « **Reply #7 on:** Jan 24, 2008, 05:24:24 PM »

Ah, the sticky throttle cam. Glad it was something simple!

Author Topic: High Idle (Read 2162 times)

oddball

High Idle

kneedownnate

Re: High Idle

oddball [OP]

Re: High Idle

Steve_925

Re: High Idle

RN37DD

Re: High Idle

oddball [OP]

Re: High Idle

RN37DD

Re: High Idle

kneedownnate

Re: High Idle

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	Author Topic: High Idle (Read 2162 times) 0 Members and 1 Guest are viewing this topic. oddball 4WD Legend Turtle Points: 1143 Posts: 952 Member since Jan '05 Weirdo High Idle « on: Jan 22, 2008, 05:48:27 PM » My 83 truck is idling high, around 12-1300 rpms. I couldn't adjust the idle up or down, so for just for the hell of it I put a different carb on there and its doing the same thing. The timing seems to be on, Ive checked it a million times. When I pull the two vacuum lines and plug them it gets close to normal but as soon as I reconnect them it goes back up. Whats going on? Logged 2008 Tacoma regular cab, 4.88s, ARBs, crawl box, manual shift FJ case kneedownnate Gold Turtle Award Turtle Points: 1128 Posts: 9,757 Member since Oct '04 Re: High Idle « Reply #1 on: Jan 22, 2008, 08:01:21 PM » Vacuum leak? Are you totally sure your throttle linkage isn't just hanging up? Logged RIP KYOTA You can go through life being scared of the possible, or you can have a little fun and tease the inevitable. Give a man venison, he'll eat for a day. Teach a man to hunt Blacktail, he'll be frustrated for life! oddball [OP] 4WD Legend Turtle Points: 1143 Posts: 952 Member since Jan '05 Weirdo Re: High Idle « Reply #2 on: Jan 22, 2008, 08:06:51 PM » It could be a vacuum leak. It idles fine when cold but as it warms the rpms go up Logged 2008 Tacoma regular cab, 4.88s, ARBs, crawl box, manual shift FJ case Steve_925 The 1.5K Club Turtle Points: -86 Posts: 1,876 Member since Feb '07 F*in catalina wine mixer Re: High Idle « Reply #3 on: Jan 22, 2008, 09:04:38 PM » i wish my idle was 12-1300 mine is more like 1500. you could retard the timing, not the best thing to do but could help Logged 1973 HILUX build up-------> http://board.marlincrawler.com/index.php?topic=48133.new#new UA 342 STEAMFITTERS RN37DD Crawler Guru Turtle Points: 0 Posts: 742 Member since Apr '07 Re: High Idle « Reply #4 on: Jan 23, 2008, 08:42:38 AM » when you plug your vacuum lines in dose your timing change? try to find out which vacuum line is effecting your idle speed. could be a vacuum leak or it could even be that your throttle positioner is always getting vacuum. Logged oddball [OP] 4WD Legend Turtle Points: 1143 Posts: 952 Member since Jan '05 Weirdo Re: High Idle « Reply #5 on: Jan 23, 2008, 07:25:01 PM » Well it ended up being the throttle pulley thing that the cable attaches to, It kept sticking Logged 2008 Tacoma regular cab, 4.88s, ARBs, crawl box, manual shift FJ case RN37DD Crawler Guru Turtle Points: 0 Posts: 742 Member since Apr '07 Re: High Idle « Reply #6 on: Jan 24, 2008, 08:46:33 AM » that well do it.. mine was so worn out it had dug a groove in the shaft and enlarged the hole. i made some bushings out of copper tubing to take out the slop. works fine now. Logged kneedownnate Gold Turtle Award Turtle Points: 1128 Posts: 9,757 Member since Oct '04 Re: High Idle « Reply #7 on:** Jan 24, 2008, 05:24:24 PM » Ah, the sticky throttle cam. Glad it was something simple! Logged RIP KYOTA You can go through life being scared of the possible, or you can have a little fun and tease the inevitable. Give a man venison, he'll eat for a day. Teach a man to hunt Blacktail, he'll be frustrated for life!