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Recent content by tech3627

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    Which replacement camshaft do you like?

    I'm looking to put a camshaft in a L26 to put in my son's 1980 Triumph TR7. We bought a donor 1998 Camaro with the L36 and 5 speed. That L36 had blown head gaskets and 220K on it, so I picked up a 65K L26 out of a 2009 Lacrosse. We are going to put the upper and lower intake and the oil pan from...
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    TPMS on a 97...

    There is not a fuse you can pull to disable this system. The driver information center receives a signal from the ABS computer to illuminate the low tire light. If you want to permanently disable the system you need to either remove the low tire bulb or the cut the wire that gives the bulb power...
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    2002 Pontiac Grand Prix SE - Idling 3000 RPM

    Those readings are not normal. Normally the 5 volt signal is always within .2 volts of 5.00 volts key on engine off and engine running. Did you check the 5 volt reference circuit at the MAP, EGR, FTP, and PCM? Either the PCM is defective or something is sending extra voltage to that 5 volt...
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    2002 Pontiac Grand Prix SE - Idling 3000 RPM

    Freeze frame and failure records are what you can view only with a diagnostic scan tool, like a tech 2. Checking for a short to voltage is checking for battery voltage on that circuit. In this case the circuits you are checking for battery voltage are the 5 volt reference (PCM connector C2 pin...
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    Connecting Rod Caps And Bearing Question - Urgent!

    Do you know how to use plastigauge? Everything needs to be very clean and dry, no oil on the bearings or crank for the journal being checked. You can see the notches to line up on the rods in this picture: Did any of the rod or main bearings spin? If you don't know what that means, they call a...
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    2002 Pontiac Grand Prix SE - Idling 3000 RPM

    You should not have 12 volts at the TPS. If you have 12 volts that is your problem. The 5 volt reference signal goes to the TPS, EGR, MAP, and fuel tank pressure sensor. Here is the factory diagnostic flow chart for P1635: Here is the wiring diagram for the TPS:
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    It's not the fuel pump, so what the heck is it? 2008 GP

    Here is a wiring schematic for the fuel pump. Check to see what you are missing at the relay. One terminal should be hot all the time, either the terminal next to that one, or across from that one should be a ground all the time. Whichever of those 2 terminals is not a ground will be the power...
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    01 SE no power to fuel pump

    Here is the PCM wiring. If your buddy's scan tool will not talk to the PCM, then you need to check power, ground, and serial data lines.
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    01 SE no power to fuel pump

    Here is a wiring diagram for the fuel pump on your car. There should be 1 wire at the relay hot all the time, another wire will be hot when the computer sends a signal to the relay (engine cranking and for 2 seconds with an ignition cycle). One wire should be ground all the time. The other wire...
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    What do you do for a cracked dash?

    I have an 02 SE that sat for a couple of years with a bad trans before I bought it. The dash was cracked in several spots and starting to curl up. I have searched the net and found that most people say there is nothing that can be done. I don't want to replace the dash but don't want it to get a...
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    Overhaulling a L36, pistons not marked for front of engine. Help

    I am overhauling a 3800 L36 for my 01 GP. I already replaced the engine a year ago with a used engine, but it threw a rod through the side of the block so I am building one this time. I had 2 extra engines in the garage, the original one from this car, and the one out of my wrecked 97 GP. I...
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