20 Most Recent 1991 Volvo 940 - Page 5 Questions & Answers

Dirty Idle air control motor, throttle body, and air filter.

Volvo 940 Cars &... | Answered on May 15, 2016

Should be a place on the engine mount bracket for 1 end and attach the other end to the longest screw of the 4 that go thru the alternator to hold it together.

Volvo 940 Cars &... | Answered on Apr 21, 2015

Any one of the mounting bolts is ground. The whole engine block is ground but I would lean towards one of the alternator mounting bolts.

Volvo 940 Cars &... | Answered on Feb 16, 2015

you will have to take that to a profesional

Volvo 940 Cars &... | Answered on Apr 14, 2014

Vacuum leak in the fuel system, and/or evaporation system leak.

Volvo 940 Cars &... | Answered on Feb 10, 2014

Heater core is cracked.
Turn off heater and keep checking coolant reserve tank level.

Volvo 940 Cars &... | Answered on Jan 12, 2014

These ones were weird. The button sometimes had to be pushed IN to turn on the A/C and sometimes in the OUT position for it to be on. The manual (accessible on volvocars.com website) will tell you which one you have.

If you don't get cold air, you should listed for the loud click under the hood of the A/C compressor starting and stopping. If you don't hear that, it's very likely that you don't have enough R134a refrigerant in the system. Sometimes a recharge is all you need, and sometimes you have a bad leak and need a system repair.

Listening for that click is key, and if you don't hear it, check the charge level at the nipple under the h

Volvo 940 Cars &... | Answered on Dec 29, 2013

Sounds like low oil pressure, there should be a check ball valve in the pump it may be stuck in the open position or the spring that holds it may be weak. Try 20/50 Castrol GTX and a quart of slick 50 with a new oil filter. If it still makes noise when cold it will be time for an engine rebuild in the near future.

Volvo 940 Cars &... | Answered on Dec 19, 2013

remove the metal trim do that with a flat screwdriver .push in into the slot to each side of the metal trim. strong spring you are pushing against.do this only to one side and lift off.you will need a hex set to remove each screw. if your dash is fitted with a turbo gauge . remove the kick plate in the drivers foot well .look for a small rubber hose .10 inches from the gauge is a joiner pull the hose apart only at that point.now back to your dash .remove the springs 4 of them. then lift out the dash you can change the bulbs when you reach in twist and remove.

Volvo 940 Cars &... | Answered on Dec 12, 2013

The crank angle sensor is located on the top of the transmission bellhousing, mounting bolt is a 10mm bolt, bottom left side (if you are looking at the engine with the intake on the right) and is very hard to see.

CAUTION: Do not apply much force on removal or installation of the sensor bolt as its bracket is very fragile. If the bracket gets distorted it could cause a no-start condition as the AC sine is too weak to be detected by the ignition computer. Also, work on the system powered down. Remove that battery negative cable!

Volvo 940 Cars &... | Answered on Nov 08, 2013

Remove the brakelight bulb holder, If you pop out the entire assembly it will save your knucles some skin. Then you want to take some fine sandpaper and clean the contacts "on the housing" well, and coat the with a thin film of dielctric grease or vaseline. I'm sure this will resolve your problem. I've had to do this to numerous Volvo vehicles over the years. Also once you're finished, the dash indicator may "not" go out unless you purchase the bulbs from Hella because of their candlepower exclusivity.

Volvo 940 Cars &... | Answered on Nov 02, 2013

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