This helps to reduce emissions for the older cars when engine is cold. It forces more air into the cat when it is cold. Basic flaw with the system is Volvo put the control valve by the exhaust manifold. Over time the diaphram in the valve fails and sticks open and allows condensation to drain down t...

Whining for a few seconds after start up is what it should do. It winds up then winds down and stops. Now if the little guy is squealing or screeching or throws a code then you are having issues.

Delete the pump and put a diode in.
Info in forum.

Yes, all of the problems sound like vacuum leaks. Until all of those are fixed, it doesn't make a lot of sense to explore other possibilities. For the intercooler hose you showed in the picture, the connection *must* have a clamp and the clamp must be very tight. Any air leakage there will cause pro...

It’s really smart to take the time to understand function so you get these right and not just play matchmaker. Pictures can mislead , are hard to take , and also hoses have usually been replaced and don’t look stock anyway Erik (NA) and cn90 (turbo) did incredible detailed jobs outlining the hoses w...

Yes, all of the problems sound like vacuum leaks. Until all of those are fixed, it doesn't make a lot of sense to explore other possibilities. For the intercooler hose you showed in the picture, the connection *must* have a clamp and the clamp must be very tight. Any air leakage there will cause pr...

It will certainly help and reduce the squeaking. There is a nylon sleeve over the pin on the latch which snugs the latch. This breaks with age as can be seen in your pictures. If I recall the latch was relatively cheap new. Unless you find an unbroken one (unlikely) used, it is still better to repla...

Something got into the fan. It comes out of the front of the blower housing directly in front of glove box. The under dash panel, knee bolster ribbed metal tube, and the glove box are removed to get to the screws. There are videos and instructions if you search. I found this complete one: https://ww...

There are four wagon shots on this page Cream yellow 850 t 5r paint code

IDK about 850’s, but there’s a mounting hole under
the Volvo badge on ‘98-‘00 70 series cars. Volvo
started shipping with a side repeater in those
fenders for ‘99-‘00. Available in JYs everywhere!