When engine is idling...ect sends signal to ecu and then ecu sends signal to iac valve for idle speed. Iac valve is active only when engine is at idle & gas pedal at rest...as soon as you press the gas pedal iac valve is closed and throttle plate takes the induction of air to the engine. TPS sen...

ECT sensor or it's wiring.

Check from both....sensor side and engine wiring loom side.

Engine temp gauge and cooling fan behavior are classic symptoms of bad ECT(or it's wiring).

Remove it and toss it in the bin!
You are chasing your tail with this crap.

Oe Volvo or at least Vernet.

+1 with Misha on the ECT.

Neil.

all right Guys. I will order one to Volvo. Thanks. If your old ECT was original and was working properly...you might re-install it and see how the engine runs. Chances are that you don't even need a new one. Don't forget to remove negative battery cable while installing the old one...in order to re...

More than likely a junk cap, I wouldn't use those Gates caps. Only use OEM expansion tank caps.

Is there a hydraulic pump excepting the steering wheel one, to put the clutch lines under pressure ? Do I have to make the engine run to test properly this installation ? No for both questions. Try to bleed it "from below". Take a medical syringe of 20 ccm or greater and a hose which can ...

Look in the Volvo repair database for ‘ rear delta links ‘

Lots of threads on drilling and burning out old ones.

Well, here is a tasty tidbit. Three failed attempts to bleed the clutch, getting some action but then losing it. Finally I set it up to gravity bleed to try and get the air out. I noticed that the fluid level dropped very little, like 1.5-2 cm A flash of inspiration. The clutch pickup tune extends w...

You should monitor the fuel pressure during the warm start to see if it is losing pressure. The normal spec is to hold pressure for 20 minutes after turn off, it might be different for the AWD and R fuel system though.