 RPM @ idle, Fluctuates between 950 to 2000 |
 Oct 25, 2011 - 7:25 PM
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Enthusiast  Joined Feb 14, '09 From Mid West Currently Offline Reputation: 7 (100%)  |
Started up fine, then started to fluctuate between 950-2000 in neutral. Drives fine, until idleing @ stops, then goes nuts!!
It revs up & down in like 2 second intervals. Things I will check tomorrow-- Dizzy, plugs & wires. Thinking about spraying the throttle body with carb cleaner. Check vacuum lines. Any help, tips or tricks GREATLY APPRECIATED!! Thanks!!!! |
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Oct 27, 2011 - 3:03 PM
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Enthusiast Joined Feb 14, '09 From Mid West Currently Offline Reputation: 7 (100%) |
Replaced all vac lines.
Start up idle is 1800, warmed up idle is 1400. Pulled the fuses for ECU & put them back in 15 mins later. Pulled the 1 in the engine bay & the 1 in the car. Tach still has slow response when slowing down // gear changing. What next?? I can't thank you guys enough for the help!! |
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Oct 27, 2011 - 9:13 PM
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 Enthusiast Joined Jul 24, '08 From Canoga Park CA. Currently Offline Reputation: 0 (0%) |
QUOTE (Bigblock @ Oct 27, 2011 - 3:03 PM)  Replaced all vac lines. Start up idle is 1800, warmed up idle is 1400. Pulled the fuses for ECU & put them back in 15 mins later. Pulled the 1 in the engine bay & the 1 in the car. Tach still has slow response when slowing down // gear changing. What next?? I can't thank you guys enough for the help!! Make sure your throttle cable isn't dragging. Grab the actual cable by the engine connection and push it backward as if you were giving it gas. Mine was binding a little as my cable is rotting through the plastic. Otherwise like they say vacume lines and check sensors so they are not disconnected or broken plastic. |
Posts in this topic
Bigblock RPM @ idle Oct 25, 2011 - 7:25 PM
stephen_lee big vac leak will make it do that. Oct 25, 2011 - 7:59 PM Bigblock stephen_lee --
Thank You!! Oct 25, 2011 - 8:32 PM stephen_lee You find the cause? Oct 26, 2011 - 7:56 AM Bigblock stephen_lee--
I will post-up what I find out. I h... Oct 26, 2011 - 10:28 AM Bigblock Found it!!!
Busted PCV!!!
... Oct 26, 2011 - 11:11 AM Bigblock Got it! A lil friendly persuasion with pliers... Oct 26, 2011 - 12:03 PM SwissFerdi Maybe reset your ECU? Oct 26, 2011 - 1:07 PM Bigblock How do I reset ECU?
Disconnect the battery for a f... Oct 26, 2011 - 1:27 PM Keiri Pull the ECU fuse for a minute then plug it back i... Oct 26, 2011 - 1:48 PM Bigblock Found 2 vac hoses needing replaced--
Just behind t... Oct 26, 2011 - 3:48 PM stephen_lee i would replace all the hoses if a few are in bad ... Oct 26, 2011 - 3:51 PM Bigblock Going to do it in the morning. Drive it there so t... Oct 26, 2011 - 6:01 PM
Bigblock Throttle cable is good.
There is an audible ... Oct 31, 2011 - 1:22 PM stephen_lee vac lines that run on the rear of the 7A are:
ac... Oct 31, 2011 - 1:51 PM Bigblock Thanks for the info stephen_lee!!
I'm... Oct 31, 2011 - 3:16 PM Bigblock K, so I found out--
Disabling ( pinch closed ) the... Nov 1, 2011 - 4:49 PM
stephen_lee that valve is a "normally closed" type v... Nov 1, 2011 - 6:58 PM |
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