Hey guys,
A few days ago my wife complained about having a problem starting a car. Then she said it stalled after few minutes of idling.
The next day I decided to check and drove it to work with no problem. But when I drove it back home it died while I was moving.
I was able to restart it and keep going...
Strange, but there was NO Check Engine light. But when I read it anyway it gave me 5 codes:
P0170 - Powertrain
Fuel Trim (Bank 1)
P0173 - Powertrain
Fuel Trim Malfunction (Bank 2)
P0335 - Powertrain
Crankshaft Position Sensor A Circuit
P1188 - Powertrain
Fuel Control (Bank 1 Sensor 1)
P1189 - Powertrain
Fuel Control (Bank 2 Sensor 1)
I left it parked for a couple of days and yesterday I decided to give it try.
The car started just fine but after few seconds of idling, it stalled.
Still NO Check Engine light but the same 5 codes.
Where should I start looking?
Bad Crankshaft Position Sensor?
Thank you in advance,
siny528i
PS. Recently I changed the Camshaft Position Sensor (P/N 12-14-1-703-221) that eliminated P0340 during the start. Code P1188 was already present there...
BMW CCA 434493
A bad crank sensor will cut the fuel supply so that would explanation all the fuel control errors.
Agree w/Jim. Loss of reference will cause all kinds of other issues; I'd ignore the fueling codes until you solve the crank sensor code. Sounds like you need a new sensor, though. Be sure to buy Genuine BMW or OEM for this. No Amazon/eBay specials. They do not work.
^^^ This. Aftermarket sensors are a real crapshoot.
Current stable:
2002 525i (Daily Driver)
1994 SN95 Mustang 'Vert (The Bumblebee)
2001 325i Convertible (Beach cruiser project)
You may want to clear all the codes. Then start it up and see what codes come back. Those P1188/11899 may be from a clogged up CVV fouling the fuel mixture.
I'm thinking that the Crank Sensor or its wiring/connection is bad. Do get a reliable BMW or OEM replacement, as the other guys have said.
Ed CT
1998 528i
5-Speed
Aspen Silver
Aubergine Leather
BMW CCA 434493
Hey guys,
Yesterday at 243200 I cleared the codes and changed the Crankshaft Position Sensor (P/N 12-14-1-709-616) along with Position Sensor O-Ring (P/N 12-14-1-748-398).
It was not that hard.
So far so good...
Let you know if anything.
Thanks again,
siny528i
BMW CCA 434493
Hey guys,
Quick update...
After 10 miles it came back with P1188...
Where would you recommend I should look now?
Thank you in advance,
siny528i
Last edited by siny528i; 03-16-2021 at 03:29 PM.
BMW CCA 434493
May want to look at the CVV system. Your '98 is the simple one - two tubes and the Valve. They do get clogged and it then sucks oil into the IM, thus fouling up the fuel mix.
Do you do a lot of short drives? If so, maybe a long run (30 minutes min) to get the engine hot and blow off/dry out any moisture and 'mayo' in there.
Last edited by Ed CT; 03-19-2021 at 09:26 AM. Reason: "mayo", not "may"
Ed CT
1998 528i
5-Speed
Aspen Silver
Aubergine Leather
Ed CT
1998 528i
5-Speed
Aspen Silver
Aubergine Leather
Siny, drive to and from work in 1st & 2nd gear, that will get your engine warmer quicker, lol.
Guys,
I did some longer than usual trips for a few days in a row and it fixed it.
Mayo and codes are gone. But, you are also right, this code usually comes back winter time.
Thanks again.
siny528i
BMW CCA 434493
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