99 V70 R rough idle after warm up and stalls Topic is solved

[kklepack]

That looks like cold running condensate , not coolant

Pull the dipstick and look for chocolate milkshake vs brown or black oil.

Thanks, Dipstick looks clean no milkshake, I may do oil change this weekend as I picked up 5W-30 Costco oil .

[kklepack]

Today, I removed cleaned turbo intake hoses and reinstalled them back. They were dirty outside and there was little oil inside. l took out the Turbo Hose with PTC nipple and it was clean as I'm planing to do PCV repair, but I did glove test again and it passed, so I may hold off until I get the car running smooth.

Someone suggested to replace ECT. ECT and thermostat has been replaced and no luck same symptoms. Re-scanned for codes and again no codes.

Did XeMODeX ETM test by their flow chart troubleshooting and all passed. Do not think there is the ETM problem, perhaps MAF could be the issue, but again no codes?

Also, I think that there was a condensation on the oil cap as to day car ran for 15 minutes fine and oil cap was clean.

What else can I try?

[scot850]

Cars need to have a good long run in cold weather or they will generate that coffee colored goo under the oil cap. A good run usually burns the condensation off and out of the engine and muffler system.

Neil.

[kklepack]

I have not register the car yet, as I'm afraid to take it on the road and get stock somewhere, so the test drive is not an option yet. I let it run for 10 minutes until stalled and cap was clean, so it is defiantly condensation. By the way here in Chicago we had a nice weather in last few days.
I did unplug coils one at the time when car was running and when I did that engine was performing worst so seems like coils are good. I was told that PO replaced the spark plugs and coils 10k miles ago.
One observation. after car wormed the temp gauge arrow stayed in the middle on the dashboard and the coolant almost reached to the top of the coolant tank . Is it normal ? Before replacing thermostat I drained 2 qts of coolant and when I re added the level stays above the MAX all the time.

Also when car was choking/puffing after worm up is saw smoke coming out of dipstick, but glove test passed. PCV?

https://photos.app.goo.gl/XgrP7TsZghdPDh5b7

[abscate]

If the level is staying the same cold it’s fine. It’s normal for the level to fluctuate during cold, warm,hot running conditions. Check it the same time in the morning so you get a ,reference,

[scot850]

How old is the gas in the tank? Old gas can cause rough running.

Neil.

[kklepack]

If the level is staying the same cold it’s fine. It’s normal for the level to fluctuate during cold, warm,hot running conditions. Check it the same time in the morning so you get a ,reference,

I will check again, but I think level is higher after I replaced the thermostat with Volvo genuine one and refilled the coolant tank. Also seems like lower radiator hose in not getting hot or at list worm. Should right?

[kklepack]

How old is the gas in the tank? Old gas can cause rough running.

Neil.

PO said that he drained it and refilled it. It has about half of the tank now. It does not smell bad.

[abscate]

With car cold pull some coolant out to get it to the MAX level. You want room for expansion

[kklepack]

With car cold pull some coolant out to get it to the MAX level. You want room for expansion

When car is cold coolant level drops to about MAX level, so I guess that is fine. Time to chase perhaps vacuum leaks.

https://photos.google.com/share/AF1QipM ... xmRllrOW9B