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Thread: Rebuilding a 98 Dinan with 316k mikes

  1. #1
    Join Date
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    740il

    Rebuilding a 98 Dinan with 316k mikes

    She is a beauty but needs a lot of attention. Acquired it from a long time owner for next to nothing and bringing her back to life.
    (Trying to post a pic from google photos...coming soon)

    Last edited by Dion98740il; 11-23-2020 at 11:35 AM.

  2. #2
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    I attribute my ability to fix a lot of things to forums like this and learning from all of you. THANK YOU IN ADVANCE.
    First project as the fall/winter arrives, fix the interior blower. Checked all fuses, tested the plug under the glove and there was voltage so I ruled out the wiring, HVAC control panel, and the pulled the passenger seat out to inspect the fuse box under there since the previous owner has water leaks. Thankfully, being in Cali, is rarely rains so the fuse box was fine. Had to remove the entire dash to get to it.


  3. #3
    Join Date
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    SYMPTOM: Leaking somewhere in the car
    PROBLEM: plugged up forward sunroof drain holes with silicon when the windshield was replaced at some point
    SOLUTION: pulled the headliner (it's sagging anyways and needs attention), flushed all four sunroof drain holes, pulled and replaced the windshield molding and cleaned out the excess silicon, re sealed the two sunroof cable brackets that are near the water channel
    Headliner pulled
    [IMG]https://scontent-dfw5-1.xx.fbcdn.net/v/t1.0-9/123138013_10158451605641195_9061253858549548555_o. jpg?_nc_cat=110&ccb=2&_nc_sid=0debeb&_nc_ohc=tPJ7t 3l9C3kAX8Ob82X&_nc_ht=scontent-dfw5-1.xx&oh=ebf8252fdc4b0b43a3890f44ecb72e6a&oe=5FDFFC EC]/IMG]
    Front drain tube, I zip tied all of the tubes while I was in there anyways
    [IMG][/IMG]
    Rear drain tube
    [IMG}[/IMG]
    Fished some weed wacker through the pipe
    [IMG][/IMG]
    Evidence of water than ran down the pillar

  4. #4
    Join Date
    Nov 2020
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    740il
    SYMPTOM: Ugly rear parcel shelf and sun screen gets stuck
    PROBLEM: Faded material and gears needing a shim
    SOLUTION: A car of fabric/plastic color and a small shim in the gear motor
    yuck

    blown speakers that I will take care of later
    [IMG][/IMG]
    Taking apart the gear motor for the sun visor

    Too much gap in the gears
    [IMG][/IMG]
    Shimmed
    [IMG][/IMG]
    Color coat for the fabric
    [IMG][/IMG]
    Painted and MUCH better


    - - - Updated - - -

    - - - Updated - - -

    - - - Updated - - -

    SYMPTOM: No fluid coming out of the windshield washer
    PROBLEM: Cracked lines
    SOLUTION: replace with standard irrigation tubing I had lying around. Same fitting sizes.
    Removed cover, just a could of push pins

    Cracked lines, replaced right through to under the hood on the passenger side


    - - - Updated - - -

    SYMPTOM: Key FOB buttons only work sometimes
    PROBLEM: Oil under the buttons
    SOLUTION: 99c eBay replacement buttons and key surgery


    [IMG][/IMG]
    Last edited by Dion98740il; 11-23-2020 at 12:12 PM.

  5. #5
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    740il
    Pulled the bumper to clean the filter which the previous owner says he never knew was there.....I am not sure how this car is still running with a filter like this. Cleaning it out and the CEL came on but went away probably due to the immediate change in air/fuel mix.

  6. #6
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    I have seen exhaust smoke on startup and see some coolant burning off the exhaust manifold...now comes the real work.

    Pulled the tray out from under the engine to start and scraped 5lbs of sludge off it to clean it

    GROSS



    uh oh, oil in the spark plugs, leaking valve cover gasket

    Valve cover off

    Nasty, off to get powder coated

    much better

    New plugs and gaskets


    Next up, the manifold, CCV/OSV, and valley pan.....

  7. #7
    Join Date
    Jun 2007
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    Lincoln Park, NJ
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    2018 M3 6MT, 2001 740iL
    Wow, welcome! sounds like you well on your way into this ambitions project. Serious miles! I am only aware like maybe 2 or 3 others over 300k. Looking forward to pics!

    What filter is behind the bumper?

  8. #8
    Join Date
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    M235i
    Nice job so far.

    I assume that's the engine air filter?
    Past: E36M3
    Current: M235xi 12.02 @ 115

  9. #9
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    It is the Dinan engine air filter. The car has Filter, ECU, Transmission Software, Exhaust, Suspension (short springs still there but shocks/struts were changed to a mix of KYB and Sachs )
    Quote Originally Posted by agentrnge View Post
    Wow, welcome! sounds like you well on your way into this ambitions project. Serious miles! I am only aware like maybe 2 or 3 others over 300k. Looking forward to pics!

    What filter is behind the bumper?

  10. #10
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    Manifold out, oil in the manifold and intake ports with carbon build up, injectors flushed with carb cleaner using $10 ebay kit and new o-rings, CCV replaced with all new gaskets, throttle body cleaned out. Dunked the manifold in a tub of dawn and hand scrubbed. Confirmed the coolant leak at the valley pan gasket which leaks down the weep holes and is burning off on the exhaust manifold.

    Carbon build up on the intake port

    Oil in the intake manifold

    Coolant leak in the valley pan

    Nasty injectors

    Cleaned up and put back together

    Rear shot with new CCV installed and yes I even stripped the torx bolts off the throttle body and CCV even with the manifold off, replaced with Hex

  11. #11
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    Yes indeed
    Quote Originally Posted by Azn Kenny View Post
    Nice job so far.

    I assume that's the engine air filter?

  12. #12
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    NY
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    750IL/540iT/R53/E46Vert
    Good work / cool project.

  13. #13
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    Wow, 316k miles. Did you check the engine compression yet? These motors weren't made to go that far. They are aluminum block, not cast iron like the previous generation.

    02 e39 540i Sport (Son), 01 DINAN 7 (Me), 12 e70 X5 x35i (Mrs), 95 e34 525i (Daughter 2), 01 e46 325Ci vert (Daughter 1)

  14. #14
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    1996 740iL
    Nice work. Do you have the service history? I have to think the guides were done at some point. I would pull the connections on the General Module just for kicks. The leak running down the A pillar can find it's way to the GM on occasion. I've also seen it fill up the glove box.

  15. #15
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    I did drive it for a couple weeks before I started engine work and it felt avg., also understand I have never driven an e38 before so don’t know what is bad or good. Fingers crossed. The positive is I personally know the owner and he had it for 14 years and he did oil every 5k. No compression test.

    Quote Originally Posted by kouks View Post
    Wow, 316k miles. Did you check the engine compression yet? These motors weren't made to go that far. They are aluminum block, not cast iron like the previous generation.

  16. #16
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    Yes full history and I personally know the last owner. Area around the GM looks clean thankfully. Read through all the records and no guides. It is on its second engine (first one blew at 50k miles with a hydro lock situation with a puddle meets Dinan intake in the bumper) so the car has 316k on the cluster but this motor has 250k. Third transmission though!

  17. #17
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    Quote Originally Posted by kouks View Post
    Wow, 316k miles. Did you check the engine compression yet? These motors weren't made to go that far. They are aluminum block, not cast iron like the previous generation.
    I've seen as high as 360k miles on original guides in a 1996 740 i parted.

  18. #18
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    Couple of small projects on it to share.
    Replaced hood struts (easy job), half the interior bulbs were out so got the ebay LED kit, sun visors cleaned up, and JB weld repair some of the interiors bits that were separating.

    Sun visor, clean above the red line and dirty below. Spray carpet cleaner, agitate with finger, dab with cotton towl.


    Cleaned on the left

    JBWeld the panel under the steering column. Hack job with previous owners with lots of clips and parts forced off.
    Last edited by Dion98740il; 11-24-2020 at 12:46 PM.

  19. #19
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    Quote Originally Posted by Dion98740il View Post
    Couple of small projects on it to share.
    Replaced hood struts (easy job), half the interior bulbs were out so got the ebay LED kit, sun visors cleaned up, and JB weld repair some of the interiors bits that were separating.
    I need to start working on interior lights soon. Mind sharing your source for the LED kit? My last attempt at getting LEDs off eBay several years ago ended poorly.

    Nice work so far. You're really diving headfirst into this project.

  20. #20
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    Awesome build thread! RARE Prefacelift DINAN 7!

  21. #21
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    I have been ordering so many parts I got it mixed up. I got them off amazon. I have not tested all the bulbs yet so I can’t say the whole kits works yet. I installed the trunk units and they worked. BLAST LED 18pc Replacement White... https://www.amazon.com/dp/B00GM2D2M8...p_mob_ap_share

  22. #22
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  23. #23
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    Quote Originally Posted by Dion98740il View Post
    I have been ordering so many parts I got it mixed up. I got them off amazon. I have not tested all the bulbs yet so I can’t say the whole kits works yet. I installed the trunk units and they worked. BLAST LED 18pc Replacement White... https://www.amazon.com/dp/B00GM2D2M8...p_mob_ap_share
    Many thanks, good sir and good luck on the rest of your project!

  24. #24
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    After pulling out every 1/4" socket/driver/extension, box wrench, bit driver I had to reach and remove the coolant accumulator, the valley pan is finally off.
    [IMG][/IMG]
    Nasty valley pan

  25. #25
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    Nice project! Car is going to be happy.
    2000 740i Sport | 2004 330xi | 1988 325i Vert | 2003 Z4 2.5 | 1995 Ford F150 | 2018 GTI

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