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Car Forum / BMW Cars / February 2009

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88 BMW 735i What are signs the water pump is bad or about to go?     Heres Why I Ask

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Chris Gloss - 31 Jan 2009 09:30 GMT
I'm experiencing different things and it was mentioned could be the
water pump.

1) While driving car seems to want to cut off and even when the pedal
is to the floor it will not take off for a few seconds.

2) Started smelling a little antifreeze in the car

Thanks in advance for the great feedback!
TPr - 31 Jan 2009 10:49 GMT
Re tthe smell:

This model is notorious for leaking heater cores - if it is, your up for a
nightmare repair or simply bypassing it and loosing the heater.

and the hesitation can be a binding airflow meter, assuming the engine has
been maintained correctly.
TPr - 31 Jan 2009 10:51 GMT
poor running is also possible from unmetered air entering the engine, from
say a bad oil cap seal, dipstick tube seal or cracked crankcase ventilation
hoses or the main air distribution hose.
Alan B. Mac Farlane - 31 Jan 2009 13:44 GMT
in article
e86b5edf-57ca-44f1-9378-0489ca02e8b3@h20g2000yqn.googlegroups.com, Chris
Gloss at chrisgloss@gmail.com wrote on 1/31/09 1:30 AM:

> 1) While driving car seems to want to cut off and even when the pedal
> is to the floor it will not take off for a few seconds.

this is a good way to trash your engine if you keep it up ... repairs are
better so it operates as designed ... you can burn rubber doughnuts with the
car if you like and put two inches on your chenny.  waste of perfectly good
engine to do that IMO and all that rot.  you fox up that engine .. toss the
car ... engine is worth more.
Scott Dorsey - 31 Jan 2009 20:39 GMT
>I'm experiencing different things and it was mentioned could be the
>water pump.

Maybe.  Look at the water pump.  If you see any signs of anything even
a little suspicious, replace it.  If you have enough miles on it to worry,
replace it anyway.  This car doesn't have one of the really bad water
pump issues that later 7-series models had, but it has water pump issues.

>1) While driving car seems to want to cut off and even when the pedal
>is to the floor it will not take off for a few seconds.

This could be damn near anything and it's something you need to address
immediately.  This could be anything from a damaged O2 sensor wire to a
vacuum leak to an internal engine problem.  You need to worry about this.

>2) Started smelling a little antifreeze in the car

This is most likely a heater core leak, and yes, you will still smell
antifreeze even if the heater isn't turned on.  These cars are notorious
for heater core leaks, and when you replace the core with a new one, sooner
or later that one will leak too.  And it's no fun to replace either
because the whole console has to come apart.
--scott
Signature

"C'est un Nagra.  C'est suisse, et tres, tres precis."

Alan B. Mac Farlane - 01 Feb 2009 07:04 GMT
>> 1) While driving car seems to want to cut off and even when the pedal
>> is to the floor it will not take off for a few seconds.
>
> This could be damn near anything and it's something you need to address
> immediately.  This could be anything from a damaged O2 sensor wire to a
> vacuum leak to an internal engine problem.  You need to worry about this.

ditto what he said ... get it fixed before you trash the engine, these
beamers work best only one way ... maintain factory specs.  IMO and all that
rot.
Chris Gloss - 01 Feb 2009 19:35 GMT
> in article gm2cuk$r...@panix2.panix.com, Scott Dorsey at klu...@panix.com
> wrote on 1/31/09 12:39 PM:
[quoted text clipped - 9 lines]
> beamers work best only one way ... maintain factory specs.  IMO and all that
> rot.

Thanks All! I'm getting it looked this week.
 
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