Question about 1994 Volvo 940

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Heater problem blower not blowing ?

1993 940 turbo, sedan, everthing working good, then blower just stopped , wife hit bump in road blower worked for 3 days then quit, checked fuses (ok). checked blower with direct power(ok). replaced resistor in plenum per dealer rrecommendation $50 still not working. replaced temp controller unit in dash with another used unit no change. wiggled keys in ignition no change sometimes i get 12+ volts thru system at blower wire and other times get 1.76 volts at blower motor ? checked all grounds that could find seem good.
Suggestions anyone!!
What am i missing thanks in advance steve in michigan

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  • 124 Answers

Hi Steve, you're so close to the answer already.
The feed wire is broken and sometimes it touches and sometimes not. It might just be the fitting on the end if you're lucky.
I'd replace the whole wire just to be sure ;)

Posted on Apr 17, 2017

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Posted on Jan 02, 2017

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SOURCE: 12 Volt Cigarette Lighter / Accessory dead

Most likely just replace it. You could pull the fuse and then use a small screwdriver to try and pull the tabs inside the receiver in toward the center a little. It could be that repeated insertion and extraction of the lighter or accessory plug has bent them outward enough that they're not making sufficient contact to power what you plug in. If that doesn't work, replace it and then put the fuse back in.

Posted on Jul 21, 2008

  • 426 Answers

SOURCE: charging problem 1991 volvo 240

14.6 means your voltage regulator or diode is suspect Despite having new alternator .Ive cross refrenced your smptoms in the haynes workshop manual and alternator is your only end answer.The haynes test is to start vehicle with multi meter connected across the battery terminals,increase the engine speed until the reading remains steady should be approximately 12 to 13v and no more than 14v.switch on as many accessories as possible(headlights heater blower radio etc)check that the alternator maintains the regulated voltage at around 13 to 14v.If the regulated voltage is not as stated then alternator is to be repaired/replaced.Good luck with it and a happy new year.

Posted on Dec 29, 2008

  • 176 Answers

SOURCE: Volvo 850 heater blower

As you can read in the first response that is most likely the long as you're gonna be doing all the labor, if you can afford it replace both the resistor and motor at he same time if you plan on keeping the car.

Posted on Jan 01, 2009

  • 83 Answers

SOURCE: Hot and Cold no Blow

Most likely it will be the blower. Check to see if there is power to it, and then ground it. If it runs, the blower speed control is likely bad. If not it will be the blower motor.

Posted on Mar 25, 2009

  • 109 Answers

SOURCE: Heater blower won't run on heat or a/c

sounds like blower motor is junk what hapens is people take the cabin filther out and all kinds of junk falls into heater motor and eventually it gets stuck and motor will not work right

Posted on Apr 12, 2009

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Happy to help
Have a nice day!

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