Hi all, my fairly new to me 92 240 stalled last night on the way home. Until now it has been running like a champ in my few months of ownership. It started right up again but I had to rev it up a bit to keep it going. It was not fully warmed up when it stalled. When I made it home though, it was, and it did it again in the driveway. It didn't want to idle consistently. It was very cold here, in the single digits F, and I'm thinking it's related to that. Are there any components that are particularly sensitive to cold that I should look at?

It's too cold to get stranded so I took my other car to work today but the 240 did start and idle fine this morning. But my confidence in it has been shaken.

Thanks!

 

http://www.brickboard.com/FAQ/700-90...neOBDCodes.htm

I would check for codes in both sockets 2 and 6.

 

I would check the idle air valve (IAC). Lubricants and gunk get froze up in the cold. The IAC needs to operate freely for the idle to work.

 

Thank you, I will check the IAC. The check engine light is not lit so my assumption is that it has not thrown any codes yet. Is that incorrect?

 

Codes could be stored that don't trigger the light.

 

Could also be good to ensure your heated air intake system to the airbox is working, it definitely sounds like throttle icing or freezing gunk as blue goose mentioned. heated intake air will eliminate this.

Regards, Andrew.

 

Nope, I don't have that pre-heat hose hooked up. It was missing when I got the car and I didn't think it was necessary. Maybe I should get that going again! It has been about 5-10 degrees warmer this week and the car is running fine again.

 

Icing in intake systems is VERY dependent on specific circumstances. It is usually worst at a certain temperature and high humidity. The temperature depends on the specific engine and how hot or cool things run.
As an example, my motorcycle will ice up the carbs when idling, but only when air temperature is between -2 to +1 degrees c and high humidity. Never happens at any other time. Minus 3 and below, no probs, +2 and above, no probs.

Regards, Andrew.