Materials to Maintain Your ZHP IIIII Hand Protection IIIII Tools to Maintain Your ZHP
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  1. #1
    Join Date
    Dec 2013
    Location
    Bay Area, CA
    Posts
    11

    Temp-related question

    Car temp. readout goes down when cruising and especially a downhill. It goes back up over a few minutes when throttle becomes more necessary. Never overheats. Just dips when there isn't much load on the engine. I believe it's the water pump or oil/coolant temp. sensor. There is a bit of water pump noise anyways. So I bought both and will be replacing both regardless. Just curious if anyone has any other ideas?

  2. #2
    Join Date
    Apr 2012
    Location
    Long Beach, CA
    Posts
    1,684
    Before my E46, I had a E34 with a similar problem. They found the water pump blades were completely gone. Dodged a bullet.
    2005 BMW 330i ZHP 6MT. Built 11-19-04. Bought 4-2012.
    Stock: Nav, leather, PDC, Xenon
    Added by me: OEM Alarm, OEM heated seats, OEM aux kit, OEM Bluetooth, intravee, M3 strut brace, BMW Performance Intake, Nappa leather arm rest, updated LCM (triple blink, euro hazards, trifecta lighting, 3 stage brakes), temp gauge

  3. #3
    Join Date
    Dec 2013
    Location
    Bay Area, CA
    Posts
    11
    Quote Originally Posted by NorCalZman View Post
    Before my E46, I had a E34 with a similar problem. They found the water pump blades were completely gone. Dodged a bullet.
    F. I have to drive a bunch today before I have time to do the job tonight. Time to pray to the car-gods for their mercy. Thanks for the story buddy.

  4. #4
    Join Date
    Apr 2012
    Location
    Long Beach, CA
    Posts
    1,684
    Let us know how it looks.
    2005 BMW 330i ZHP 6MT. Built 11-19-04. Bought 4-2012.
    Stock: Nav, leather, PDC, Xenon
    Added by me: OEM Alarm, OEM heated seats, OEM aux kit, OEM Bluetooth, intravee, M3 strut brace, BMW Performance Intake, Nappa leather arm rest, updated LCM (triple blink, euro hazards, trifecta lighting, 3 stage brakes), temp gauge

  5. #5
    Join Date
    Jan 1970
    Location
    Ocean County, NJ
    Posts
    7,273
    How about at highway speed? Sounds like maybe thermostat to me.

    Sent from my Nexus 7 using Tapatalk
    -Be yourself; everyone else is already taken.
    ZHP Pre-Ride Briefing

    2005 ZHP, Alcantara, Silver Cube, Nav, Sharked, BMW Perf Intake, BMW Perf CF Strut Brace, CF Valve/Fuel Rail Covers,
    Shadowline Grills, CF Splitters, Fog Light Inserts, Euro-mirrors, CDV Delete, Beisan vanos, GAS DISA, BP Coded

  6. #6
    Join Date
    Jan 1970
    Location
    Southern California
    Posts
    18,064
    Hmmm. My temp readout varies too. Never figured it was a problem.
    Randeaux/Rando/John/jr - '06 Cic ZHP; Southern California
    "ZHP or not, I still like you"


    ZHP Performance Package, Cold Weather Package, Leather, Jet Black/Black/BlackCube, NAV, Anthracite Black "my individual" interior trim
    ESS Stage 1 Twin Screw Supercharger, Sprint Booster, BMW Perf Intake, Magnaflow Exhaust, Dinan TB & STEP S/W, UCC Sway Bars, Apex EC-7 18x8.5 ET38
    Suspension: AST 44100 dampers, Bimmerworld front adjustable end links, Swift springs (8K front, 10K rear), Vorshlag camber plates
    Dynavin D99+, Hardwire V1 (w/V1 Connection), BSW Stage 1 Speakers, Kicker Amp/Subwoofer
    BMW Performance Strut Brace, Orion V2 Angel Eyes, No-holes License Plate, SMG Paddle Shift Mod, Besian VANOS, Gold DISA, Fan Delete, M3 Side Mirrors
    Note: Actual car no longer resembles signature picture

  7. #7
    Join Date
    Jan 1970
    Location
    Liberty Township, OH
    Posts
    37,935
    Quote Originally Posted by kayger12 View Post
    How about at highway speed? Sounds like maybe thermostat to me.

    Sent from my Nexus 7 using Tapatalk
    +1

    Quote Originally Posted by johnrando View Post
    Hmmm. My temp readout varies too. Never figured it was a problem.
    No way.

    Sent from my SCH-I545 using Tapatalk
    Call Me Dane l 2/2004 330i ZHP l 18x8 ET45 BBS CK's wrapped with Michelin Pilot Sport AS3+ @ 245-40-18 l KW V1 Coilovers in front l KW V1 springs w/ Bilstein B8 dampeners in rear l BMW Performance Rotors l UUC StrutBarbarian l Racing Dynamics Rear Strut Bar l Jim Conforti Shark Injector l Light Birch Interior Trim l Bimmian Celly Mount l M3 Trunk Mat l l e90 Performance E-Brake & Shift Knob l M3 Tri-Stitched Boots l AL Headlight Retrofit with ZKW Lenses l CobyWheel Wrap w/M3 Stitching l LCM sw 4.5 triple blink and rear fogs l Maple Interior Trim

  8. #8
    Join Date
    Dec 2013
    Location
    Bay Area, CA
    Posts
    11
    If cruising at 2-2500rpm it will dip a couple mm..

  9. #9
    Join Date
    Jan 1970
    Location
    Huntsville, AL
    Posts
    4,400
    Is the engine taking longer to worm up to the normal mid point operating temp


    Sent from my iPhone using Tapatalk

    Dinan; Hign Flow Intake System, & Strut Tower Brace
    Turner Motorsports; Underdrive Power Pulleys
    Koni Sport, Bridgestone; Potenza RE-11, Coby Wheel
    Stewart High Performance Water Pump
    Hawk High Performance Street 5.0 Brake Pads
    Brembo Rotor

    The purposeful face of a formidable athlete:

    The spine-tingling 330i Performance Package.

    Purchased CPO on 12/23/2006 with 28,090 miles

  10. #10
    Join Date
    Jan 1970
    Location
    Southern California
    Posts
    18,064
    Yes, not the gauge, but if I go to the actual computer temp numbers.
    Randeaux/Rando/John/jr - '06 Cic ZHP; Southern California
    "ZHP or not, I still like you"


    ZHP Performance Package, Cold Weather Package, Leather, Jet Black/Black/BlackCube, NAV, Anthracite Black "my individual" interior trim
    ESS Stage 1 Twin Screw Supercharger, Sprint Booster, BMW Perf Intake, Magnaflow Exhaust, Dinan TB & STEP S/W, UCC Sway Bars, Apex EC-7 18x8.5 ET38
    Suspension: AST 44100 dampers, Bimmerworld front adjustable end links, Swift springs (8K front, 10K rear), Vorshlag camber plates
    Dynavin D99+, Hardwire V1 (w/V1 Connection), BSW Stage 1 Speakers, Kicker Amp/Subwoofer
    BMW Performance Strut Brace, Orion V2 Angel Eyes, No-holes License Plate, SMG Paddle Shift Mod, Besian VANOS, Gold DISA, Fan Delete, M3 Side Mirrors
    Note: Actual car no longer resembles signature picture

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