Thread: Issue after intercooler install, car revs high then drops way low

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  1. #61 Re: Issue after intercooler install, car revs high then drops way low 
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    Im going to check the LIM later next week, dont have it with me right now.

    02 Grand Prix GT Mods' Top Swapped Gen 3, Stage 2 IC, 3.0" MPS, 42# injectors, 1.8 Yella Terra roller rockers, Speed Daddy Headers, CAI, Self Tuned, 180 tstat, ram air hood, front/rear sway bars/and STB's AL 104's, 12' Dual Piston Break kit
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  2. #62 Re: Issue after intercooler install, car revs high then drops way low 
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    Im back! Got new bolts since i had messed up the heads on my old ones for the sc. At this point the car runs great, no problems at all. I then installed the intercooler again and started the car. Big surprise, there is white smoke coming out of the exhaust again. At this point i am completely stumped. I thought maybe coolant was leaking from the core so i took the sc off, lifted the IC up and ran the pump. I did not see a single drop of coolant come from the core. Maybe with the sc on top and the pressure from the bolts is making it leak? I have no idea now so i thought i would try asking here!

    02 Grand Prix GT Mods' Top Swapped Gen 3, Stage 2 IC, 3.0" MPS, 42# injectors, 1.8 Yella Terra roller rockers, Speed Daddy Headers, CAI, Self Tuned, 180 tstat, ram air hood, front/rear sway bars/and STB's AL 104's, 12' Dual Piston Break kit
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  3. #63 Re: Issue after intercooler install, car revs high then drops way low 
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    Do you have a handheld vacuum pump for bleeding brakes? Try pulling a slight vacuum on the core and see how long it holds. Don't go below about 15" or you risk imploding the core.

    Jeff
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  4. #64 Re: Issue after intercooler install, car revs high then drops way low 
    Turbo is the way to go. REDCRAPGP's Avatar
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    So I don't have to read back a few pages so what happens if you just install the SC and leave the core off.. Does the car run like it should? Also if it's a ZZP code they have had their fair share of problems.. Are you sure the pcv is functioning correctly?


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  5. #65 Re: Issue after intercooler install, car revs high then drops way low 
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    His car ran fine after he uninstalled the IC and just installed the blower. This is round 2
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  6. #66 Re: Issue after intercooler install, car revs high then drops way low 
    Turbo is the way to go. REDCRAPGP's Avatar
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    Thanks for the cliff notes lol


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  7. #67 Re: Issue after intercooler install, car revs high then drops way low 
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    I do not have a handheld vacuum pump for bleeding brakes, any other way i could test it that is either free or very cheap?

    02 Grand Prix GT Mods' Top Swapped Gen 3, Stage 2 IC, 3.0" MPS, 42# injectors, 1.8 Yella Terra roller rockers, Speed Daddy Headers, CAI, Self Tuned, 180 tstat, ram air hood, front/rear sway bars/and STB's AL 104's, 12' Dual Piston Break kit
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  8. #68 Re: Issue after intercooler install, car revs high then drops way low 
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    Well see about renting one. My only other test would to be put the IC core under pressure, but that's just going to dump coolant into your engine.

    how about this:

    connect 2 long clear hoses to the IC core then have the ends open but hang them from the hood with some safety lock wire, bailing wire or a coat hanger. Fill the tubes with water and blow in each end to get all the air bubbles out of the core. It really helps to have clear tubing (Home Depot or equivalent) fill the tube until you have about 6" of free space then mark the level with a marker. Start the car and let it run for a minute or so and watch the level. If it drops then you have a leak in the core.

    Jeff
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  9. #69 Re: Issue after intercooler install, car revs high then drops way low 
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    Forgot to mention the pcv should be functioning properly, i have a front valve cover breather and the rear is going through the ic.

    Jeff:
    I will try that test to see if the level does go down, it will be later in the week though when i have time to test it. Thanks!

    02 Grand Prix GT Mods' Top Swapped Gen 3, Stage 2 IC, 3.0" MPS, 42# injectors, 1.8 Yella Terra roller rockers, Speed Daddy Headers, CAI, Self Tuned, 180 tstat, ram air hood, front/rear sway bars/and STB's AL 104's, 12' Dual Piston Break kit
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  10. #70 Re: Issue after intercooler install, car revs high then drops way low 
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    put the cap on the valve cover, aka ditch that breather. see how it runs then. you dont need that breather if the pvc is working.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  11. #71 Re: Issue after intercooler install, car revs high then drops way low 
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    Without the valve cover breather only the rear pvc would be functional, is that enough? Also i had tested it with just the cap on as well.

    02 Grand Prix GT Mods' Top Swapped Gen 3, Stage 2 IC, 3.0" MPS, 42# injectors, 1.8 Yella Terra roller rockers, Speed Daddy Headers, CAI, Self Tuned, 180 tstat, ram air hood, front/rear sway bars/and STB's AL 104's, 12' Dual Piston Break kit
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  12. #72 Re: Issue after intercooler install, car revs high then drops way low 
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    I tried a test with my IC core. This may or may not have been a good idea/ even really test it out but i tried. I hooked up the core to my water hose. I was able to turn the water on all the way and i did not see any leaks in the core.

    02 Grand Prix GT Mods' Top Swapped Gen 3, Stage 2 IC, 3.0" MPS, 42# injectors, 1.8 Yella Terra roller rockers, Speed Daddy Headers, CAI, Self Tuned, 180 tstat, ram air hood, front/rear sway bars/and STB's AL 104's, 12' Dual Piston Break kit
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  13. #73 Re: Issue after intercooler install, car revs high then drops way low 
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    did you remove the core or leave it in? You really need to test it under vacuum, and with the engine running as I suggested. If the it isn't running you run the risk of hydro locking it, Which could damage the engine. If you do end up locking it up remove the plugs and turn the engine over.
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  14. #74 Re: Issue after intercooler install, car revs high then drops way low 
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    The core was not in the engine when i tested it. Ok now i understand that its the vacuum created by the engine that can cause the core to leak.

    I didnt want to put it the core back in because these crappy bolts from ZZP do not like being put on and taken off multiple times, it tends to strip the stupid allen key heads. On my second set already.

    From what i gather the coolant has to be leaking from the core, since i did not see coolant in the oil after i fixed the lim. So i should just get a new core right?

    02 Grand Prix GT Mods' Top Swapped Gen 3, Stage 2 IC, 3.0" MPS, 42# injectors, 1.8 Yella Terra roller rockers, Speed Daddy Headers, CAI, Self Tuned, 180 tstat, ram air hood, front/rear sway bars/and STB's AL 104's, 12' Dual Piston Break kit
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  15. #75 Re: Issue after intercooler install, car revs high then drops way low 
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    Can't you put some UV dye in the core? Maybe that would help you find it? Perhaps you could put one color in the rad, and another in your HE?
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  16. #76 Re: Issue after intercooler install, car revs high then drops way low 
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    Those must be some suckass bolts if you're stripping the heads out. If they are SST then that's just the way it is, SST is hard and soft all at the same time, it's a weird metal. Most SST bolts are made from 17-8 SST, which has marginal corrosion resistance. Use standard black oxide or grade 5 or 8. What size are they? Length, pitch and diameter. I have several fastener companies I use and can probably get you something of better quality.

    as far as testing it will be difficult to put the core in something and keeping it from imploding when you pull a vacuum on it. You wouldn't happen to have (access to) a referigerent pump either air powered or motor powered do you? If you do then you could place a couple of sheets of steel or 1/4" plexiglass/lexan/acrylic in top and bottom of the core holder and draw a vacuum and see where the leak is. You can find the plastic at a plastics place, they usually sell scrap by the pound. I use a place called Regal Plastics in Houston. In fact I have a ton of it at the shop. I'd be willing to send you some, just pay the shipping and let me know the dimensions you need.

    if you have access to an air compressor you can buy an air powered vacuum pump for like $12 from harbor freight and it serves double duty when you need to work on AC.

    just smear some grease around the upper and lower part and slap a piece on either side and draw a vacuum on it like I described earlier and you will see where the leak is.

    Jeff
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  17. #77 Re: Issue after intercooler install, car revs high then drops way low 
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    The bolts are m8 x 1.25, 8 100mm, 1 120mm, 1 140mm. Currently i dont need any, but if i do ill let ya know! I am curious how much you could get them for.

    As for the vacuum test, i see harbor freight has a Break bleeder and vacuum pump kit, i can get that tomorrow, i have never used one. Is there anything i need to go along with it? Also how do i hook it up to the IC? I did a quick search but not really finding out how to.

    02 Grand Prix GT Mods' Top Swapped Gen 3, Stage 2 IC, 3.0" MPS, 42# injectors, 1.8 Yella Terra roller rockers, Speed Daddy Headers, CAI, Self Tuned, 180 tstat, ram air hood, front/rear sway bars/and STB's AL 104's, 12' Dual Piston Break kit
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  18. #78 Re: Issue after intercooler install, car revs high then drops way low 
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    Hooked up the Break bleeder vacuum. Got it to 14 vacuum and it held there for a few minutes. No leak anywhere.

    02 Grand Prix GT Mods' Top Swapped Gen 3, Stage 2 IC, 3.0" MPS, 42# injectors, 1.8 Yella Terra roller rockers, Speed Daddy Headers, CAI, Self Tuned, 180 tstat, ram air hood, front/rear sway bars/and STB's AL 104's, 12' Dual Piston Break kit
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  19. #79 Re: Issue after intercooler install, car revs high then drops way low 
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    Can you post a pic of how the setup is as installed (minus installing it of course). I am not sure how the system is piped, I have seen other pics and it looks as though the the inlet and outlet are outside the manifold adapter. I have run into situations where a device leaks under one condition but not the other, so it acts kinda like a check valve, that's why I was suggesting using plexiglass on top and bottom. At this point I have only seen LIM from the top with the SC off and I'm not familiar with the actual adapter/spacer that goes between the SC and LIM. I am assuming you tapped and plugged the LIM to block of the TB water passages?

    i would pull the vacuum and leave it for at least an hour.

    For the bolts you guys need socket head (aka Allen)? Would standard hex head be better?

    Jeff
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  20. #80 Re: Issue after intercooler install, car revs high then drops way low 
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    For the bolts, i would say hex head.
    Yes the LIM has been tapped and plugged.

    Here are some pics of the IC, LIM, and what it looks like installed.










    02 Grand Prix GT Mods' Top Swapped Gen 3, Stage 2 IC, 3.0" MPS, 42# injectors, 1.8 Yella Terra roller rockers, Speed Daddy Headers, CAI, Self Tuned, 180 tstat, ram air hood, front/rear sway bars/and STB's AL 104's, 12' Dual Piston Break kit
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