Question about 1995 Volvo 940

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940 auto.when starting from cold chugs but clears after reving up ????

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Could be the idle air control valve fading off or the intake vacuum hoses

Posted on Dec 30, 2010

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My 1995 Volvo 940 wagon won't start right up in cold weather (below freezing).


You stated that it was hard to start. Did it crank over more slowly than usual? If so the motor oil may be too thick for below zero temperatures. If it cranked normally, there are a number of things that can cause this.This car has fuel injection controlled by the computer(ECM). If the temperature sensor for the ECM is out of specifications, then the ECM will not fuel the motor properly when cold starting. Old age, lots of miles can lower compression and cause hard starting. the fuel injectors may be worn, defective or clogged, delivering the fuel pooly. Was there a check engine light on? This is before mandated ECM monitoring, but if there is a light on, there is a way to check what it is causing it. There are other things like cracked vacuum hoses that can affect the starting. Worn spark plugs and wires can have an effect. When it chugged coughed and spit, was there black or blue smoke coming out of the tailpipe? Black smoke is too much fuel and blue smoke is oil consumption. I know that it is hard to decide where to go for repair, but the dealer has trained personnel, and a warranty for repairs. In my experiance as a dealership technician and an independant shop owner that some things are better off at the dealer, unless the independant shop has factory trained people and lots of information available, you may be charged with them trying to learn on your car. I had a 1987 LeSabre that when the temp was way low, the coil pack failed to spark the car.

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1 Answer

97 tahoe 5.7 350 chugging, jerking, reving rpms intermittant


The first thing that needs to be done here is to have the engine control module scanned for fault codes, based on the results then move on.

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1 Answer

Engine stalls chugs then hard to start


check the fuel filter and pump sounds like dirty fuel

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1 Answer

I have a 93 volvo 940 that dies when reverse is selected. The engine runs fine in drive but, when put into reverse it chugs and then dies. The car has had some stumbling on acceleration but not all the...


Sounds like it could be the mass air flow sensor.
Have vehicle scanned for codes and use shop manual to conduct the correct tests on that sensor .

Jun 21, 2010 | 1993 Volvo 940

1 Answer

Ford lazer surges untill warm?


check to see if auto choke is working freely at cold position. the choke may need backing off at cold position.

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CAR SOMETIMES WONT START


you are having a fuel delivery problem...and it could be caused by numerous things...such as a bad fuel pump, a bad cold sensor or warm up injector.  You haven't attempted to  solve any of these suspected faults...so take it to a mechanic for repair

Apr 11, 2009 | 1991 Volvo 940

1 Answer

Lumina runs poor when cold


is it an auto choke if so it may not be working some cars have a cold start which is on the inlet manifold and some are in the carbs them self but i think it is not working so that is why it runs rough when cold hope ive helped you

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1 Answer

1989 ford t-bird 6cly auto O/D broke just reves also slips


Depends on what auto tranny you have. If you take it to an tranny shop and have an exchange rebuilt put in be prepared to shell out $3500.00 for replacement.

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