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zahir_213 · 11-17-2010, 12:15 AM

Hello all,

I am having some cold start problems with my UK 1999 318is M44
car has done 99,000 miles.
just carried out an oil change using 5w40 fully synthetic oil.

I know loads of people have had cold start issues with a number of possible causes.

I am having the same cold start problems as everyone else.

The car seems to work perfectly once it has warmed up.

Anything other colder than 6 degrees C (42F) will almost certainly give me some problems when trying to start.

feels like not all cylinders are firing until it gets going and warms up.

So I have done the following
1. Changed the PCV + hose
2. Cleared the diagnostics, then read it again after a couple of days driving.

With regards to the codes it gave me the following results:
62 Randon/Multiple : Misfiring in several cylinders
29 Switching solenoid for Air Assisted Injection Valves Control Circuit (Bank 1)
35 Additive mixture adaptation (idle), bank 2, control limit reached

Could anyone please help me decipher the codes?
I used carsoft 6.5, did a search on the forum but it seems everyone has different types of codes?? Really confusing

Anyway my next step to try and fix the cold start issue is:

1. Try and read Air intake sensor and Coolant sensor live readings to check operation
2. Remove air intake manifold and check for perished vacuum pipes
3. Try some fancy new spark plugs

Any help much appreciated!

thanks

11-17-2010, 12:15 AM	#1
zahir_213 Junior Member Join Date: Nov 2010 Location: UK Posts: 15 iTrader: (0) Photo Gallery	Another cold start problem with codes Hello all, I am having some cold start problems with my UK 1999 318is M44 car has done 99,000 miles. just carried out an oil change using 5w40 fully synthetic oil. I know loads of people have had cold start issues with a number of possible causes. I am having the same cold start problems as everyone else. The car seems to work perfectly once it has warmed up. Anything other colder than 6 degrees C (42F) will almost certainly give me some problems when trying to start. feels like not all cylinders are firing until it gets going and warms up. So I have done the following 1. Changed the PCV + hose 2. Cleared the diagnostics, then read it again after a couple of days driving. With regards to the codes it gave me the following results: 62 Randon/Multiple : Misfiring in several cylinders 29 Switching solenoid for Air Assisted Injection Valves Control Circuit (Bank 1) 35 Additive mixture adaptation (idle), bank 2, control limit reached Could anyone please help me decipher the codes? I used carsoft 6.5, did a search on the forum but it seems everyone has different types of codes?? Really confusing Anyway my next step to try and fix the cold start issue is: 1. Try and read Air intake sensor and Coolant sensor live readings to check operation 2. Remove air intake manifold and check for perished vacuum pipes 3. Try some fancy new spark plugs Any help much appreciated! thanks Last edited by zahir_213; 11-20-2010 at 07:21 PM.