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  • #1

    Leaking Water Pump??

    I have a 97 Z28 LT1. There seems to be some coolant spraying off of my surpentine belt and on the hood, not much, and only when it heats up. I also dont seem to have a lot of heat inside the car. Even with the heat on high and the engine temp. guage reads about 180. I guess my question is, is this normal for how these pumps fail? I don't have much experience with them and before I just replace it maybe someone can help. The car does have 75,000 on it and I believe the pump has never been replaced. Thanks!
    1997 30th Anniversary Z28. Artic White with Hugger Orange Stripes. T-Tops, K&N Cold Air Intake, Mac Headers & High Flow Cats,Flowmaster Cat Back. Auto W/B&M Shifter Plus. Drilled And Slotted Rotors. Steel Braded Brake Lines. Alpine CD/MP3, JL Audio Stealth Box.
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  • #2
    There is a weep hole on the bottom of the water pump that normally will leak if the bearing is wore out.
    Be sure the purge the coolant system if you put a new one on. (2) bleeder screws right below the thottle body area.


    LT4KM, 160' TS, MAF ends, TB-BP, GMPP 1.6 R/R, SLP CAI, LCA, Adj. tierod, BMR tower brace, 17x9"F/R, 275/40R17 GY F1 tires. WS6 Muffler, LS1 DS. 21mm rear sway bar. Soon to be LT4 heads, intake, & HOT cam

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    • #3
      Be sure to fix it before you waste your Optispark......
      96 WS6 Formula: Ram Air, 383 Stroker, Ported LT4 Heads and Manifold, 1.6 Crane Rollers, 58MM T.B., AS&M Headers, Borla Exhaust, Meziere Elec. H2O Pump, Canton Deep Sump Oil Pan, 100 HP OF TNT N2O!! , T56 Conversion w/ Pro 5.0 shifter, SPEC Stage 3 Clutch, Hotchkiss Subframe Conn., Lakewood Adj. Panhard Bar, Spohn Adj. LCA's, BMR Adj. T.A., Custom 12 bolt w/ 3:73's, Moser Axles, Eaton Posi, Moser Girdle
      11.6 @ 123mph (1.6 60' - getting there )

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      • #4
        That is exactly what mine did about 2 months ago and so I opted to replace it due to the mileage on my motor. After I got the water pump off I did find out that the bearings and seals were shot on the drive shaft. So you had better replace it before it gets any worse and kills your optispark. Oh and definitely purge the system because if you don't the heater will never get warm.
        Zach Elwell hinse Sacius or Sac for the smart asses!

        Custom CAI, Descreened MAS, Throttle body bypass, Hooker exhaust with no cat, SPEC stg 2 clutch, SPEC billet flywheel, LS1 driveshaft, Eibach sportline springs, Comp Cams 1.6 roller rockers, MSD coil, JET stg 2 chip, Short throw shifter, and plenty more to come!

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        • #5
          Thanks Guys! These pumps a pain to change? I guess I have to make sure not to get the opti wet huh?
          1997 30th Anniversary Z28. Artic White with Hugger Orange Stripes. T-Tops, K&N Cold Air Intake, Mac Headers & High Flow Cats,Flowmaster Cat Back. Auto W/B&M Shifter Plus. Drilled And Slotted Rotors. Steel Braded Brake Lines. Alpine CD/MP3, JL Audio Stealth Box.

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          • #6
            Yah

            I am planning on doing mine here before spring comes. My water pump is spraying coolant on the belts and stuff. I have a 97 Trans Am. 56,000 miles and the pump is shot.

            I will probably replace the opti-spark too. Just because I am in there, and I figure I mine as well, just to be safe for another 50,000 miles or so. I would hate to have to rip the thing apart in another year just to find out my opti took a crap.

            Pump doesn't look very hard. Its right there in front of you. Just have to take the fans and some other things out to get at it. I am going to do it myself.

            ...Tim

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            • #7
              Originally posted by Timbers
              Pump doesn't look very hard. Its right there in front of you. Just have to take the fans and some other things out to get at it. I am going to do it myself.

              ...Tim

              remove the fans? I'm pretty sure it comes out with the fans left in place.
              Tracy
              2002 C5 M6 Convertible
              1994 Z28 M6 Convertible
              Current Mods:
              SLP Ultra-Z functional ramair, SS Spoiler, STB, SFCs, Headers, Clutch, Bilstein Shocks, and TB Airfoil. 17x9 SS rims with Goodyear tires, 160F T-Stat, MSD Blaster Coil, Taylor wires, Hurst billet shifter, Borla catback with QTP e-cutout, Tuned PCM, 1LE Swaybars, 1LE driveshaft, ES bushings, White gauges, C5 front brakes, !CAGS, Bose/Soundstream audio, CST leather interior, synthetic fluids

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              • #8
                Originally posted by TraceZ
                remove the fans? I'm pretty sure it comes out with the fans left in place.
                The water pump will come out with the fans still there, but some feel more comfortable with the fans out, and the fans are not hard to remove either. Just tricky getting them to clear the radiator hoses.

                http://ken.lowrance.com/projects/CSIwaterpump/

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