1997 volvo 850 relay for secondary air injector system

SOURCE: Volvo 850 fault codes

SRS reset

SOURCE: Read a PO410 code,1996 850 GLT volvo, secondary

The most common cause is either a bad air pump (under your battery tray) and/or a bad SAS check valve which is connected in to your exhaust next to the firewall in the engine compartment.  It could also be a bad relay for the motor.  Less common, but possible, other bad components are the vacuum solenoid that controls the SAS valve, which is located by the radiator or a broken/leaking vacuum line to or from the solenoid.

You can test the motor by jumping the relay or applying 12v straight to it.  If the motor runs it most likely is not the problem.  If not, it's likely that there is water in it and you should replace both the motor and SAS valve.  The SAS valve is a pain to get unbolted, at least on turbo cars.  You can check the solenoid by just making sure there is vacuum going to the SAS valve a few seconds after starting up the car cold, and checking the lines for any obvious wear in the rubber elbows or breaks in the plastic line.

SOURCE: i won a 1997 volvo 850 and i just got it from

You can get the code from the dealer with the VIN# and you have to pull the radio out to get the radio's serial number. If you've tried too many wrong codes the screen will show error message. If so - disconect the battery for about 60 minutes to clear error message then reconnect and enter correct code

SOURCE: 1997 Volvo 850. Car shakes when put into reverse

Check to see you have spark on all plugs.Then check ur fuel system to see if your getting fuel.Then we can assist you.

Ned C Cook

• 3433 Answers
• Posted on Aug 24, 2009

SOURCE: 1993 Volvo 850 AC

A/c system is undercharged, this rapid cycling of th compressor is a sensor issue and the improper temps at different locations of the system is being detected. Simply adding refrigerant is a very poor practice. It's quick and just as temporary. A properly serviced system eliminates these constant problems and repairs and the needless expense that comes with them.Good Luck and keep in mind that a clutch that cycles like that will not last long.