Re: 97 528i running ruff obd II codes

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Re: 97 528i running ruff obd II codes

hepcatal

28 Oct 2007 00:17

On Oct 26, 7:49 am, gerg...@bellsouth.net wrote:

> I have a 1997 528i (BMW), with 145,000 miles on it... the car started
> running ruff at idle and the check engine light has come on. I am
[quoted text clipped - 6 lines]
>
> Any Idea what has gone wrong and what I need to do to fix it?

Before changing any parts check the air intake boots for cracks/
splits, esp. by the throttle body, the little hose that branches off
for the idle valve always cracks. the neaxt thing is the crankcase
vent valve. with the car running remove the oilfill cap, lifting it up
slowly. there should be VERY SLIGHT vacuum resistance. if you pull it
off and can hear it making a sucking sound, the crankcase vent valve
is probably faulty. this is also common, The mixture faults can cause
O2 sensor faults. Chances are there is just a mixture problem. good
luck.

gergsud@bellsouth.net

26 Oct 2007 11:49

I have a 1997 528i (BMW), with 145,000 miles on it... the car started
running ruff at idle and the check engine light has come on. I am
getting 4 p-codes

p0170 fuel and air metering bank 1
p0173 fuel and air metering bank 2
p1188 linear 02 sensor compensator resistor short to B+
p1189 linear 02 sensor compensator resistor short to ground

Any Idea what has gone wrong and what I need to do to fix it?

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