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BMW 3-Series (E90 E92) Forum
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DIY – Water Pump & Thermostat Replacement (2007 335i w/Automatic Transmission)
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11-02-2016, 12:04 AM | #243 |
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E93 Waterpump and thermostat replacement
Thank God for that BavAuto video! Gave me the courage to try this DIY (by far the most involved I had ever done prior to this)
My experience 1. E93= having to also undo the cross-bars that reinforce the frame. Luckily, you only have to undo them in the front and at the midway points. This gives you enough leverage to push the sway bar down once you undo its 4 bolts. Push the sway bar right onto the cross beams. They flex nicely. 2. I spent way too much time under the car disassembling all of the parts,carefully. Better safe than sorry. 3. I am lowered on H&R and Konis. Even with the Rhino ramps, the car is quite low to the ground. Don't expect to be doing this on your side 4. That plastic 90 degree elbow hose which connects to the pump is a real bbbbbbbbbbtch to undo and put back on. To get it off, hold it and yank it back and forth until it comes off the water pump flange. Took me a while to do this, given that the car is an '08 5. Putting back this same elbow-shaped hose was a torture. First time around I forced it, but it did not come on fully. After bolting everything up and testing the car on local roads, this piece disconnected and all of the new coolant came right out. SO...don't try to force this hose back onto the pump. If you have pliers with long handles, flip your pliers upside down and use the long handles to clamp this hose at its flange. Once clamped, just apply a bit of pressure to snap the hose right onto the pump. You'll hear a click. After trying to force the damn hose for an hour, doing this took 5 seconds and was so easy, I literally jumped for joy. Finesse is everything! 6. Some of the clamps on the thermostat and pump may face away from you and at such an angle that it's close to impossible to get a ratchet on them. Still, it's possible, so don't give up.
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11-02-2016, 06:42 PM | #244 | |
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To your points: 1. ... Yeah, I wasted about 10 minutes thinking I could get by without moving the sway bar, and all the sh!t you have to do so that you can move that. Future advice to DIYers, you have to move the sway bar. Period. (Exception: you have elf hands.) 2. ... good advice. 3. ... I don't know how you all do it on ramps, I jacked up the car so I could take off the right front wheel and fender liner. Much better access to back of pump and thermostat. 4 & 5. ... Somehow it came right off for me, but yep, a biiiotch to put back on.... correctly. I'm sorry, but I couldn't help but laughing at your story of the new coolant coming out, only because I could imagine the pain... 6. ... I spent time to set them up right for the next H20 pump replacement. I got the wrong bolts, I cut them down to 26mm. See pic. Also, maybe obvious to everyone, but I'll post anyways. When you get the new pump and thermostat, you can temporarily bolt them together and then set up the hose between them so it's angled "just right" for the thermostat. I had no problems putting the pump in (holy f it's tight) even with the hose already attached. You will have to set up the tensioner screw so that you can access again, but you don't have tighten once it's in. Again, see pic (top of hose goes to thermostat, I took pic after I disconnected the thermostat from it.)
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Last edited by IN54NITY; 11-19-2016 at 07:30 PM.. |
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11-10-2016, 03:56 AM | #245 |
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Water pump failed!
Beginning of this week I hit 63k miles on my 08 335i.
I told myself I should replace the waterpump since people start having failures at about 60k. Today, after dropping my daughter off at preschool, my car over heated. I figured it was probably the water pump and had AAA tow my car home. I'm going to order a GATES 41504E tonight. It's just a Continental OE pump. |
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11-13-2016, 10:37 PM | #246 |
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The 90 degree plastic "quick disconnect" hose on the back of the water pump is impossible to remove..... I've taken the circlip completely off Aswell.... Any tips?
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11-14-2016, 08:08 AM | #247 |
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11-14-2016, 04:06 PM | #248 | |
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at first i thought maybe the circlip was not fully unseated which makes sense, so i just removed it completly. But it still barely budges.... As you know its tight in there, so getting a good grip on it is difficult. I shall keep trying. |
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11-17-2016, 01:55 PM | #251 |
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Water Pump
My pump just went bye bye : (
Luckily I have Route 66 coverage so I am not too bummed about it. With that said I am wondering if there would be any additional labor or savings to install inlets/outlets. Kind of a..."hey while your under there" It's in the hands of a BMW Master Mechanic if that makes a difference.
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2010 E90 LCI N54 335xi / AR DP's / KW V1 / Stoptech Slotted Rotors / SS lines / EBC Yellowstuff / Fuel-it stage 2 LPFP / Fuel-it Bluetooth Content Analyzer / ETS FMIC / VRSF CP / TurboSmart Dual Port Kompact kit / MHD / WEDGE E60 ProTune / CORSA Exhaust / Alpina TCU / VTT Outlets / MMP Inlets
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11-18-2016, 02:54 PM | #252 |
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Electrical connector to the thermostat
What's the secret to removing the electrical connector to the thermostat? Everything else seems easy so far except that connector. I don't want to break it. I slide a small screw driver up the connector until it caught and then I pryed the top away from the connector and tried to pull the connector straight out. No go. Will try again.
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11-18-2016, 03:03 PM | #253 | |
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Gary |
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11-20-2016, 10:38 AM | #254 | |
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11-20-2016, 10:40 AM | #255 | |
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Glad you got it solved. |
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11-20-2016, 11:36 AM | #256 | ||
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11-20-2016, 01:09 PM | #257 |
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11-23-2016, 02:23 PM | #258 |
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Yeah I had to pry it off. It was easy with the pry bar. My pry bar was tire iron for my tire changer:
http://www.harborfreight.com/24-in-g...ron-61603.html Gary |
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12-24-2016, 03:59 PM | #259 |
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About to give this a go next week when parts arrive.
Got the overheat message this week... For anyone who's done this and downpipes, is it as hard as a downpipe install? Hoping if I manages the DPs I can get this one done. |
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12-29-2016, 08:43 PM | #260 | |
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After doing both I can see water pump definitely easier IMO. Reinstall was much quick than removal |
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01-20-2017, 10:25 PM | #262 | |
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Drives: '09 n54 e92xi, 6mt, kw v3
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My replacement seems to be fine, though it has only had 12k of use. FYI, my old water pump bearing was still silky smooth, it was either the electric motor itself or electronics that were kaput. Last edited by IN54NITY; 02-01-2017 at 09:59 AM.. |
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02-07-2017, 09:14 PM | #264 |
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So I just finished this job today. Took my time and followed a combination of the BavAuto videos and the DIY write up.
This isn't a hard job, you just have to be patient. The hardest part was removing the awful fittings with the spring clip. You cant twist them because they are keyed, you have to rock them back and forth just enough to the point where you can get a flat head screw driver into the hose to crack them (You'll know what I mean when you get to that point). My dad really wanted to help as he knows nothing about mechanic work and was willing to do most of the steps as long as he was given clear directions. I also drank a mouthful of coolant and got it into my ear. |
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