Thread: LIM swap. Need some info...

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  1. #1 LIM swap. Need some info... 
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    Hey! So here is a new thread in my on going saga. I did my tear down. Swapped out the LIM. Also, since I had the option, I swapped out the Valve cover gaskets as well. Bolted everything back up. Torqued to specs. Filled the block up with trash oil to flush the system. Started to flush the coolant as well. Went to crank over the motor to push the coolant, and all i got was .. crank ... crank... crank... then finally she turned over. So, I went back ... Checked for spark. pulled off a SP wire.. checked for spark. Got spark. Pulled off the fuel line going to the fuel rail. Got Fuel. Checked all my vaccuum lines. Went back inside to crank it over again... Crank... Crank... Crank... then finally she turned over... Idle has me nervous.. it was sitting at 2K.. then went to 3K on her own. Went checked the throttle cables to see if they were sticking.. all is well. Is it the IAC? TPS? Any ideas? Thoughts? Comments?
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  2. #2 Re: LIM swap. Need some info... 
    Donating Users chrisb's Avatar
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    recheck your throttle body evap line or connections. i just did this two days ago i had the whole tb unplugged and evap line so major vac leak there and it rev to 3k just like that. I felt dumb lol
    99 Grand Prix old build- CAI, Custom exhaust, HV3, Stage 2 TB, custom tune, ported heads intense s1x cam, headers.
    Nothing great Just a small T66 Turbo with a Hv3 On a stock tranny untill i finish the other one.
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  3. #3 Re: LIM swap. Need some info... 
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    Quote Originally Posted by chrisb View Post
    recheck your throttle body evap line or connections. i just did this two days ago i had the whole tb unplugged and evap line so major vac leak there and it rev to 3k just like that. I felt dumb lol

    hmm, didn't know they could be reversed... what connections should I check?
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  4. #4 Re: LIM swap. Need some info... 
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    update on this... i have the idle rpm down to about 1000/1100 ...
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  5. #5 Re: LIM swap. Need some info... 
    The Blue One blueguy's Avatar
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    hmmm, well that is normal for the raised idle setting in the base tuned PCM files IIRC...
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  6. #6 Re: LIM swap. Need some info... 
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    Quote Originally Posted by bluegtp91 View Post
    hmmm, well that is normal for the raised idle setting in the base tuned PCM files IIRC...

    Even though its a stock PCM?
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  7. #7 Re: LIM swap. Need some info... 
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    i found out what I did wrong... had 2 connections crossed.
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  8. #8 Re: LIM swap. Need some info... 
    The mod from over yonder TheOtherNick's Avatar
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    Good to hear.
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