s60 2006 t5 baffled

volvomadness · Post by **volvomadness** » 07 Aug 2020, 08:40

On initial start in the morning the car stumps and stalls. After a few starts it eventually idles normally with no problems. No CEL. I just put a fuel system cleaner in to see if this resolves issue. New Volvo plugs, breather box and air filter have already been done.

Any other thoughts.
Madness

Post by **SuperHerman** » 07 Aug 2020, 10:21

On start up, when it is lumpy - what does the exhaust look like?

2000c70hpt · Post by **2000c70hpt** » 07 Aug 2020, 10:43

Could be a bad MAF. My c70 did the same thing till I changed it

Post by **oragex** » 07 Aug 2020, 15:22

The kind of issue you would need to read the codes

Post by **Blacklab467** » 07 Aug 2020, 22:21

Mine did that when the fuel pump was on it’s way out. No CEL.

Post by **jonesg** » 08 Aug 2020, 03:06

I would suspect low fuel pressure after sitting overnite.
Try keying the ignition off/on a few times to prime the system before cranking the engine.

volvomadness · Post by **volvomadness** » 12 Aug 2020, 23:05

Thanks all for your replies. Finally I got a CEL and the culprit was the exhaust vvt solenoid. Replaced which solved the constant stalling a power loss issue. Lucky I had spare parts lying around and didn't have to purchase one.

Still have a slight stall when cold on startup no cel. I feel it's the fuel pressure sensor which I will replace this weekend.

Thanks again Madness

Post by **darrylrobert** » 13 Aug 2020, 20:46

your lucky, i drove my xc70 for 3 years with a bad VVT solenoid no CEL. Check your key antenna ring, the solder joints can crack causing the car to hesitate to start.Good luck