Just got water pump replaced! car runs terrible

Dynomyte · 07-04-2012, 03:16 PM

Hey guys, I just got my water pump and thermostat replaced at my local BMW dealer. I drove my car home and went away for the weekend.

Today I was driving it all day and the car is running terrible. No engine response, much less power and I cant seem to reach boost target. 2nd gear feels like 4th.

Any thoughts on what could have went wrong?

I already called BMW to notify them they said they would speak to the technician about it. My car is out of warranty and I am assuming they will deny all options of them being responsible.

Is it possible that when the was overheating something else broke? gasket melted, etc?
Does the thermostat or water pump install involve anything that might cause such symptoms such as disconnecting a boost line or something?

If anyone has any suggestions plz chime in.

Thanks,
Dynomyte

BMWsky · 07-04-2012, 03:32 PM

How was the car running before you got it replaced? Were there any symptoms like the ones you're describing?

vase330 · 07-04-2012, 03:49 PM

Probably co-incidence here. I have had all those things go bad and replaced in my car. But if you are early pre-2008 car might want to get fuel system checked. It might turn out to be failing low pressure fuel pump or pressure regulator. I know the HPFP is the famous one that fails, but I had your symptoms and turned out to be other two. I was already on my 4th HPFP so I thought it was it again, but was wrong. Is it suddenly and randomly running out of power??

cstavaru · 07-04-2012, 03:56 PM

Boost leak while they put the parts together ?

MrRager · 07-04-2012, 03:59 PM

i bet the intercooler pipe popped off

Dynomyte · 07-04-2012, 04:21 PM

Car was running fine right before I dropped it off. I will check all the codes in a few minutes. I doubt its the fuel pump im at my 3rd and had the 3rd one for over 2 years.

It feels like a boost leak. Gaz pedal is very unresponsive. Would they actually have to touch any boots related parts for the thermostat/water pump install?

enrita · 07-04-2012, 04:47 PM

You would get codes for anything and limp mode.

Dynomyte · 07-04-2012, 07:02 PM

My car does not go into limp mode. Just feels extreamly unresponsive.

Codes are the following:

2C9F
2F80
29F3

I searched all these codes and all members on the forums didnt notice a reduction in power. I will change the firmware and map on the procede maybe that will help.

Anyone else has a clue?

Dynomyte · 07-05-2012, 01:14 AM

bump

stratplaya06 · 07-05-2012, 01:23 AM

Does it feel like there's no boost? That's what it feels like when the coolant temp gets up around 240*, and I would bet that your coolant temp sensor is somehow involved. I just replaced my water pump and was driving a few days later, had no lights or indication of problem, but the car wouldn't hit boost. I looked at my BMW Perf steering wheel and it said my coolant temp was 425* (WTF???). I knew that was false because the car felt fine and obviously the head wasn't melting, but then I pulled over, power cycled the car, and when it started again my coolant temp was at 160* (because the fan/water pump were running full speed due to the sensor abnormality). Why it didn't show any warning (like it did when the water pump died), but had the ridiculous high water temp, is still a mystery. I would have had no idea had I not had the performance wheel that displays the coolant temp from the stock sensor. Thing is worth its weight in gold.

Dynomyte · 07-05-2012, 12:31 PM

The coolant sensor might be the culprit. I will call the dealer. So from what I understand the Thermostat and coolant sensor are 2 different parts?

Dynomyte · 07-05-2012, 12:33 PM

Yeah it feels like there is much less boost and it extremely unresponsive. Gaz pedal feels heavy. Basically feels the same as when the engine overheated. You pus the gaz in and the car is reluctant to move.

Dynomyte · 07-06-2012, 09:58 AM

I am still trying to figure this out. Is the termostat and coolant temp sensor 2 different parts? I have done some searching and cannot find anything.

Exterminador · 07-06-2012, 11:43 AM

Quote:

Originally Posted by Dynomyte

Hey guys, I just got my water pump and thermostat replaced at my local BMW dealer. I drove my car home and went away for the weekend.

Today I was driving it all day and the car is running terrible. No engine response, much less power and I cant seem to reach boost target. 2nd gear feels like 4th.

Any thoughts on what could have went wrong?

I already called BMW to notify them they said they would speak to the technician about it. My car is out of warranty and I am assuming they will deny all options of them being responsible.

Is it possible that when the was overheating something else broke? gasket melted, etc?
Does the thermostat or water pump install involve anything that might cause such symptoms such as disconnecting a boost line or something?

If anyone has any suggestions plz chime in.

Thanks,
Dynomyte

I just had that too and it was the cylinder head solenoids.

Dynomyte · 07-06-2012, 12:16 PM

You had the same symptoms or the same issue after changing waterpump and t-stat?

dlbrooks18 · 07-06-2012, 12:49 PM

I bet they reprogrammed with latest software maybe? Check the workorder..

Dynomyte · 07-06-2012, 12:54 PM

Have the work order no reprogramming. Im starting to lose it.

Dynomyte · 07-10-2012, 05:13 PM

So I figured out the cause of this whole fiasco. After I picked the from the dealer I reloaded firmware and maps and WG was set to 90%.

After reading a few posts regarding similar symptoms I set the WG to 30% and all symptoms were gone.

07-04-2012, 03:16 PM	#1
Dynomyte Private First Class 11 Rep 166 Posts Drives: BMW 335i E92 Join Date: Jan 2007 Location: Montreal, Canada iTrader: (0)	Just got water pump replaced! car runs terrible Hey guys, I just got my water pump and thermostat replaced at my local BMW dealer. I drove my car home and went away for the weekend. Today I was driving it all day and the car is running terrible. No engine response, much less power and I cant seem to reach boost target. 2nd gear feels like 4th. Any thoughts on what could have went wrong? I already called BMW to notify them they said they would speak to the technician about it. My car is out of warranty and I am assuming they will deny all options of them being responsible. Is it possible that when the was overheating something else broke? gasket melted, etc? Does the thermostat or water pump install involve anything that might cause such symptoms such as disconnecting a boost line or something? If anyone has any suggestions plz chime in. Thanks, Dynomyte
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07-04-2012, 03:32 PM	#2
BMWsky Major 25 Rep 1,244 Posts Drives: 335i Join Date: Dec 2010 Location: Webster NY iTrader: (1)	How was the car running before you got it replaced? Were there any symptoms like the ones you're describing?
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07-04-2012, 03:49 PM	#3
vase330 Colonel 103 Rep 2,760 Posts Drives: 19 E63S; 15.5 RangeRover ATB Join Date: Jan 2007 Location: Arlington, Va iTrader: (1)	Probably co-incidence here. I have had all those things go bad and replaced in my car. But if you are early pre-2008 car might want to get fuel system checked. It might turn out to be failing low pressure fuel pump or pressure regulator. I know the HPFP is the famous one that fails, but I had your symptoms and turned out to be other two. I was already on my 4th HPFP so I thought it was it again, but was wrong. Is it suddenly and randomly running out of power?? __________________ E92 335 \| Space Gray \| Saddle Brown Dakota \| Dark Burl Trim \| ZPP \| ZSP \| AT \| Idrive \| 6FL \| FBO \| Dinan CAI \| Quaife LSD \| STG3 PROCede.
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07-04-2012, 03:56 PM	#4
cstavaru Brigadier General 328 Rep 3,262 Posts Drives: 2009 335i M Sport Sedan 6MT Join Date: Aug 2008 Location: Bucharest, Romania iTrader: (0)	Boost leak while they put the parts together ? __________________ Mods(click): Cobb + RB Turbos \| Aquamist HFS-4 Meth \| Drexler LSD \| Bilstein B12 Pro-Kit \| Custom K&N Apollo Intake \| Wagner Intercooler \| Macht Schnell Downpipes \| BMW Performance Power Kit \| BMW Performance Exhaust \| BMW Performance Short Shifter \| M3 Subframe Bushings \|
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07-04-2012, 03:59 PM	#5
MrRager First Lieutenant 25 Rep 381 Posts Drives: 335i Join Date: Jul 2011 Location: 73134 iTrader: (0)	i bet the intercooler pipe popped off __________________ 2008 335i 6MT
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07-04-2012, 04:21 PM	#6
Dynomyte Private First Class 11 Rep 166 Posts Drives: BMW 335i E92 Join Date: Jan 2007 Location: Montreal, Canada iTrader: (0)	Car was running fine right before I dropped it off. I will check all the codes in a few minutes. I doubt its the fuel pump im at my 3rd and had the 3rd one for over 2 years. It feels like a boost leak. Gaz pedal is very unresponsive. Would they actually have to touch any boots related parts for the thermostat/water pump install?
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07-04-2012, 04:47 PM	#7
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	You would get codes for anything and limp mode. __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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07-04-2012, 07:02 PM	#8
Dynomyte Private First Class 11 Rep 166 Posts Drives: BMW 335i E92 Join Date: Jan 2007 Location: Montreal, Canada iTrader: (0)	My car does not go into limp mode. Just feels extreamly unresponsive. Codes are the following: 2C9F 2F80 29F3 I searched all these codes and all members on the forums didnt notice a reduction in power. I will change the firmware and map on the procede maybe that will help. Anyone else has a clue?
	Appreciate 0 Quote

07-05-2012, 01:14 AM	#9
Dynomyte Private First Class 11 Rep 166 Posts Drives: BMW 335i E92 Join Date: Jan 2007 Location: Montreal, Canada iTrader: (0)	bump
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07-05-2012, 01:23 AM	#10
stratplaya06 Captain 47 Rep 967 Posts Drives: 2008 E92 335xi-SOLD 5.0 Miata Join Date: May 2008 Location: Maryland iTrader: (10)	Does it feel like there's no boost? That's what it feels like when the coolant temp gets up around 240, and I would bet that your coolant temp sensor is somehow involved. I just replaced my water pump and was driving a few days later, had no lights or indication of problem, but the car wouldn't hit boost. I looked at my BMW Perf steering wheel and it said my coolant temp was 425 (WTF???). I knew that was false because the car felt fine and obviously the head wasn't melting, but then I pulled over, power cycled the car, and when it started again my coolant temp was at 160* (because the fan/water pump were running full speed due to the sensor abnormality). Why it didn't show any warning (like it did when the water pump died), but had the ridiculous high water temp, is still a mystery. I would have had no idea had I not had the performance wheel that displays the coolant temp from the stock sensor. Thing is worth its weight in gold. __________________ \| PROcede Rev3 \| Vishnu Meth \| DCI \| BMW Perf. Exhaust \| AR Coated/Catless \| CP-E FMIC \| Quaife \|
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07-05-2012, 12:31 PM	#11
Dynomyte Private First Class 11 Rep 166 Posts Drives: BMW 335i E92 Join Date: Jan 2007 Location: Montreal, Canada iTrader: (0)	The coolant sensor might be the culprit. I will call the dealer. So from what I understand the Thermostat and coolant sensor are 2 different parts?
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07-05-2012, 12:33 PM	#12
Dynomyte Private First Class 11 Rep 166 Posts Drives: BMW 335i E92 Join Date: Jan 2007 Location: Montreal, Canada iTrader: (0)	Yeah it feels like there is much less boost and it extremely unresponsive. Gaz pedal feels heavy. Basically feels the same as when the engine overheated. You pus the gaz in and the car is reluctant to move.
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07-06-2012, 09:58 AM	#13
Dynomyte Private First Class 11 Rep 166 Posts Drives: BMW 335i E92 Join Date: Jan 2007 Location: Montreal, Canada iTrader: (0)	I am still trying to figure this out. Is the termostat and coolant temp sensor 2 different parts? I have done some searching and cannot find anything.
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07-06-2012, 12:16 PM	#15
Dynomyte Private First Class 11 Rep 166 Posts Drives: BMW 335i E92 Join Date: Jan 2007 Location: Montreal, Canada iTrader: (0)	You had the same symptoms or the same issue after changing waterpump and t-stat?
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07-06-2012, 12:49 PM	#16
dlbrooks18 Brigadier General 164 Rep 3,735 Posts Drives: e90 335i Join Date: Nov 2008 Location: Los Angeles iTrader: (2)	I bet they reprogrammed with latest software maybe? Check the workorder.. __________________ 2008 E90 335
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07-06-2012, 12:54 PM	#17
Dynomyte Private First Class 11 Rep 166 Posts Drives: BMW 335i E92 Join Date: Jan 2007 Location: Montreal, Canada iTrader: (0)	Have the work order no reprogramming. Im starting to lose it.
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07-10-2012, 05:13 PM	#18
Dynomyte Private First Class 11 Rep 166 Posts Drives: BMW 335i E92 Join Date: Jan 2007 Location: Montreal, Canada iTrader: (0)	So I figured out the cause of this whole fiasco. After I picked the from the dealer I reloaded firmware and maps and WG was set to 90%. After reading a few posts regarding similar symptoms I set the WG to 30% and all symptoms were gone.
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