Engine Light??

Golfr43 · 01-15-2005, 06:40 PM

My 98 ti's engine light has come on and stayed on now for a few days, I checked all the fluids and fuses but found nothing wrong, any ideas or should I just take it in???

BMWDRIFTER · 01-15-2005, 09:34 PM

take it in

**1996 328ti** · 01-15-2005, 10:06 PM

You can't diagnose a CEL over the internet.
Common problems are 02 sensors and loose gas cap.
Find someone with a scan tool.

Golfr43 · 01-16-2005, 12:36 AM

Thx guys, takin it in.

ZeroG · 01-16-2005, 02:02 AM

Quote:

Originally Posted by Golfr43

Thx guys, takin it in.

Check engine lights are emissons related items. (O2 Sensors, ICV's, Cat's, etc.)

-Chad

bobrich · 01-16-2005, 06:32 AM

In addition to my check engine light being on, I get stumbling and missing below 3000 rpms after engine warmup and especially after sharp turns or going up a steep incline. Light stays on but missing and stumbling stop if I gear down and exceed
3000 rpm. Emission related? Gas cap on tight so that's not it. Dealer is 75 miles from my home. Is it safe to drive or will I have to have it trucked to dealer?
Bobrich

ZeroG · 01-16-2005, 08:36 AM

Quote:

Originally Posted by bobrich

In addition to my check engine light being on, I get stumbling and missing below 3000 rpms after engine warmup and especially after sharp turns or going up a steep incline. Light stays on but missing and stumbling stop if I gear down and exceed
3000 rpm. Emission related? Gas cap on tight so that's not it. Dealer is 75 miles from my home. Is it safe to drive or will I have to have it trucked to dealer?
Bobrich

I am sorry I guess I was not clear. The CEL responds to activity from emission based sensors. Your symptoms are kind of interesting. I would check the basics (spark plugs, fuel filter, and fuel injectors) then if that does not work take it to the dealer.

It should be safe to drive, just keep an eye on all your gauges.

-Chad

BMWDRIFTER · 01-16-2005, 09:22 PM

CEL may come on any drivetrain related problems not emissions only. BMW ecm's can monitor every sensor, wire, relay, activation, mixture and related control modules. there are well over 200 codes. I don't know where the believe that every time a cel comes on it is for a O2 sensor.

**1996 328ti** · 01-16-2005, 10:17 PM

All I say it is common for 02 sensors to cause a CEL.
I would not replace one without confirming it.
Even when my Peake says 02 sensor I let my mechanic confirm it.
The only times my CEL gave me a fault was twice for 02 sensors and once for the MAF which corrected itself.

aceyx · 01-17-2005, 12:15 AM

bobrich where are you located? there might be a good independent shop around you, or perhaps even a ti.org or bimmerforum member with a scan tool to help you out.

i would try the local cca chaper first, to locate both a good shop and somebody with a tool.

it sounds like a problem with fuel delivery, either a fuel filter or even the pump. but, this is over the internet so what do i know?

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