2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

ic pump problem; going into limp mode.

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Old 01-05-2010, 06:22 PM
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ic pump problem; going into limp mode.

ok my ic pump i thought was shot bc in the filler neck it stopped bubbling while the car was idling and once the car got warmed up if i ever floored it above roughly 4500rpms it would say engine power reduced and go into limp mode. So i got a new bosch ic pump and just installed and and right after it was in the coolant in the filler neck was bubbling so i took it for a sping, redlined a few times to make sure it was good to go and everything went ok. well now the coolant in the filler neck isnt bubbling again and it goes into limp mode above 4500rpms. any other ideas? i dont think the pump could be bad. When the car is on and i feel the new bosch pump it feels like is vibrating but at the same time the entire car is bc its on so im not sure.
Old 01-05-2010, 06:31 PM
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what all cooling mods do you have? I doubt a shot IC pump would throw it into limp mode, your IAT2s would have to be insane for that to happen.
Old 01-05-2010, 10:22 PM
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i have meth coming in at 13psi and a front mount heat exchanger, but that wouldnt be helping if the ic pump isnt working. and it only does it when the car has been running for like 15 minutes aka hot enough for the coolant in the lines thats not flowing to get hot.

plus is still doesnt explain why my ic pump is not working. again.

Last edited by restonSS; 01-05-2010 at 10:22 PM. Reason: Automerged Doublepost
Old 01-06-2010, 02:50 AM
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is the coolant in the filler neck supposed to get hot?
Old 01-06-2010, 12:00 PM
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^its supposed to bubble when the car is on.
Old 01-06-2010, 01:01 PM
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well bubbling is a sign ,but have you tried the straw in the filler neck for any movement? and I also highly doubt the ic pump would put you into limp mode because mine has gone out before and never went into limpmode just pulled timing up top at WOT during hpt logs.
Old 01-06-2010, 05:32 PM
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whats the "straw in the filler neck" involve doing?
Old 01-06-2010, 05:47 PM
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open the filler neck, place straw inside, start car, is straw moving from the flow of fluid?

You might wanna check you Map connection, this can cause limp mode..
Old 01-06-2010, 09:37 PM
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^gotchya thanks. and yeah im dreading taking all the plastic crap off to get to the map sensor. kinda pissed since its so damn cold out right now. im going to go get my codes read and see what that says then go from there. thanks guys. BTW what should i clean the map sensor with?

nvm, was confusing MAP sensor with MAF sensor. i prob should check my MAF sensor too though i guess.

Last edited by restonSS; 01-06-2010 at 09:37 PM. Reason: Automerged Doublepost
Old 01-07-2010, 02:57 AM
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sc inlet pressure and barometer not correlating i almost gaureenttee it, is there a dtc? if so get it scanned and look up the code. had to pull out my scip sensor and wipe some oil off it and a air nozzel to blow debris out of it,, actually seen another lb of boost from cleaning it
Old 01-07-2010, 12:34 PM
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where and what is the scip sensor?
Old 01-08-2010, 03:55 PM
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bump on where and what scip sensor is.
Old 01-08-2010, 04:20 PM
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the scip is the MAF(Mass Air Flow), it is located at the end of the intake, your gonna have to take out the headlight and the driver side fender well to get at it or you may just be able to remove the headlight and the headlight bracket, i dont remember.
But i have seen limp mode caused by loose or bad connections on teh MAP and the MAF, the MAP is teh sensor located on teh top of the blower, cant miss it, just check the connections and such.
Old 01-08-2010, 08:37 PM
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ok thank you
Old 01-08-2010, 09:11 PM
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the scip is not the maf the scip sensor is located on the supercharger inlet on the top side
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