Volvo Forum

abscate wrote: ↑10 Jan 2019, 12:12 I don’t think it is used at all on turbos though, is it?

I was talking about IAT...this isn't IAT.
I edited post to avoid confusion.

Disconnect Maf connector,start the car and test drive it.If problem disappears...Maf is bad.
Other than that...could be a HUGE vacuum leak or FPR failure.
But,let's go one step at a time...cheapest things first!

Yes...these engines runs pretty good on 4 cylinders.

Instrument cluster DTC are readable on both...OBD I and OBDII...except that obdII will need at least Vol-Fcr(special Volvo scan tool)...generic code readers will NOT work on anything other than ecu.

Since the pump was running constantly...i would say that the "hissing" is just the fuel pump sound.

Another guess would be bad fpr which is failed internally,returning all fuel back to the tank all the time.

Late 850 with M4.4 like mine have the same setup.

Non turbo with auto transmission and in "D" idles at 1000rpm.
While in P or N it will be around 900rpm.
N/a manual around 900...Turbos a bit lower...around 800+-50.

Welcome aboard!

I always push pistons back in without loosening bleeding bolt...that's how they supposed to push back..otherwise you will let air in the line.

wizechatmgr wrote: ↑16 Feb 2019, 01:51 ...I believe this is one of those Misha questions - if it's possible, he's done it in Siberia....

It's SERBIA!

'99 to '95 is ok as long as you keep the manifolds from '95 and cvvt unplugged.
'95 to '99 isn't possible because of cvvt.

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