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finally got my ls1 started. but its full throttle?

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Old 05-30-2009, 03:45 PM
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Default finally got my ls1 started. but its full throttle?

it was so stupid of me. i put the coil harness on the one side backwards. i wasnt even payin attention to it. anyways now it starts but as soon as it starts its trying to rev way up like its floored. wtf is going on? i looked all over this thing and cant figure out everytime i go to start it, it acts like its floored.. please help
Old 05-30-2009, 07:52 PM
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check your throttle body....is it stuck open?
Old 05-30-2009, 08:55 PM
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you got a vacuum leak somewhere. did you unplug any pcv lines and forget to plug it back up? tb could be stuck open, but highky unlikely. if you cant pinpoint anything, reset the pcm
Old 05-31-2009, 01:30 AM
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pcv is non existant. 98 has special lines that i dont have so i plugged the tb one and the valve covers are not an issue.is there another pcv hook up i missed? tb is deffinately shut all the way. its so weird. it acts like its stuck full throttle.
Old 05-31-2009, 01:51 AM
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brake booster hose?
Old 05-31-2009, 01:57 AM
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does it have a cam??? i would say the tune!
Old 05-31-2009, 06:08 AM
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Vacuum leak somewhere. Check around the intake and tb with some soapy water in a spray bottle and see if it bubbles up.
Old 05-31-2009, 08:58 AM
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Originally Posted by redbird555
Vacuum leak somewhere. Check around the intake and tb with some soapy water in a spray bottle and see if it bubbles up.
I dont see that working. You need to use something that is flammable and listen for an increase in engine speed when you spray it around the intake. Vacuum sucks in, so how is it going to bubble up?

I would check for a vacuum leak at the intake gasket. Ive dealt with this problem before.
Old 05-31-2009, 09:33 AM
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i dont have time to test for it. as soon as it starts it tries to red line if i dont shut it off.
Old 06-01-2009, 06:31 AM
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Oops you right I was think of one thing and typed another. ^What he said try spraying something flammable and see if rpms go up. However if its trying to redline right away thats not a real possibility. Just out of curiosity how is it redlining if the tb is closed? If it is it must not be running well when its going up in rpms then??
Old 06-01-2009, 12:06 PM
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i never let it get that high. i shut it off before it hits 3500. but it would, if i didnt shut it off. anyways i found the problem i bought an intake off of thomascreation and i never really looked it over. after all this i pulled the intake off and the back of it where the map sensor and brake booster hose goes is broke not real fixable. so thats the cause of my huge vacuum leak. now i need an intake. might as well be an ls6 one




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