850 Stalling Issues - More so in hot weather Topic is solved

Frails · Post by **Frails** » 16 Jun 2005, 20:40

So my 94 850 has been stalling everytime I try to start it after a trip. In other words, I drive to a store, when I come out, it won't start for at least five minutes, then starts right up. If it sits long enough, it will start so no quick stops for me.

I live in AZ and it's over 100 degrees now. Today, when I came out to my car after work it would not start. It basically will not catch, just chug. So I waited 2.5 hours for the sun to go down some and it to cool a little (yeah right!). Well it started right up. SOMEONE PLEASE HELP!!!! The body and interior of this car is pristine! I do not want to get rid of it. I have read in numberous posts that the fuel pump and/or relay are the culprits to many stalls. Could this be heightened by temperature?

Guest · Post by **Guest** » 17 Jun 2005, 06:25

Maybe it's vapor lock. Does it do it only on short trips or after long trips as well? I had a Ford that did exactly the same thing once, and it turned out to be a tiny vacuum leak. Just an idea. Probably the Volvo has something weirder going on!

Guest2 · Post by **Guest2** » 17 Jun 2005, 07:08

No codes or nothing applicable in here?

https://www.matthewsvolvosite.com/chat/p ... php?t=3484

White850Turbo · Post by **White850Turbo** » 17 Jun 2005, 07:12

Check for:

1. Codes
2. Spark
3. Fuel

Guest · Post by **Guest** » 21 Jun 2005, 20:27

Anonymous wrote:Maybe it's vapor lock. Does it do it only on short trips or after long trips as well? I had a Ford that did exactly the same thing once, and it turned out to be a tiny vacuum leak. Just an idea. Probably the Volvo has something weirder going on!

No it really doesn't matter. When it was cooler out, I could drive to the corner store (1 mile) in the morning, run in for a minute and it would start again. Anything trip longer than that and no start right away. Whatever it is, is definitely affected by temperature. But remember that I live in AZ and it's 110 right now so most cars would be.

There is a small offwhite hose with a black elbow fitting that has broken off. Maybe a vacuum line? I'm changing the fuel pump relay anyway as it resides in the engine compartment which could explain why the car needs to sit a while before restarting. It has stalled on teh freeway as of late and once or twice at stop lights.

Guest · Post by **Guest** » 22 Jun 2005, 10:28

That broken off hose/elbow sounds like something to fix. Another possible cause:

https://www.matthewsvolvosite.com/chat/p ... php?t=2680

Especially if it stalls out under ALL conditions (idling and while moving) and takes a while to restart the engine after the engine is warm.