Question about 1991 Volvo 240

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I own a 1991 volvo 240 dl and when car is cold transmission shifts fine once car has warmed up transmisson loses third gear like car is neutral once cold shifts fine again what do I need to look for

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The automatic transmission fitted on these models could be the AW-70, AW-70L or AW-72. The three transmissions are very similar. They are conventional in design though they are clutch-type (no brake bands) and very sturdy.
The automatic transmission is a complex unit, but if not abused, is reliable and long-lasting. Troubleshooting these units is fairly complex, so the home mechanic should be concerned with one thing to start: oil level and condition. Begin by having the idle line pressure tested when warm (it tends to drop as the oil warms up). If the level is low, ensure no leaks are present and top it off as needed (do not overfill - fill when the transmission is hot - if overfilled, this can damage the transmission as well as cause hot oil to be ejected from the fill hole) and test drive it again. Ensure to follow procedures when topping up automatic transmission oil, and ensure it is of the correct type. If the oil level is OK and line pressure is not then replacement of the oil and screen along with cleaning of the magnets should be done. The magnets are there to trap metal contaminants before they can damage the transmission.

The oil should be flushed out, filter changed and magnets cleaned at least every 80,000 miles. Have this done first to see if the problem goes away. If it persists, then the clutch pack for that gear or the valve body is suspect. If the oil is new and proper drain and flush procedures have been followed, it's possible that the check ball in the valve body is sticking once warm. What I have done with these is drop out that valve body and clean it thoroughly, provided scrupulous cleanliness is observed. While cleaning it, replace the check balls and associated springs. If this checks out OK after the maintenance, then it's possible the pistons, accumulators or clutch packs have probably worn out.

If by this point, the transmission still doesn't function normally, then replacement is the only fix. No DIY repair is recommended and may be exchanged in part exchange for a new or rebuilt unit.

Posted on Dec 22, 2014

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SOURCE: 1991 volvo 240 dl transmission shift fine when

the cooler lines are probly clogged causing trans to overheat--buy a haynes manual or chec library in auto section

Posted on Nov 10, 2014

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1 Answer

1991 volvo 240 dl transmission shift fine when cold once warm transmission stops shifting what so I look for

the cooler lines are probly clogged causing trans to overheat--buy a haynes manual or chec library in auto section

Nov 10, 2014 | 1991 Volvo 240

1 Answer

88 volvo 240 dl won't shift into 4th

This is common to the AW70 transmission when the rear bushing has been left very worn for a period of time. The rear shaft wear heavily on the main transmission housing causing the pressure not to build enough to engage the overdrive gear.

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sounds pretty normal. what speed do you try out the passing gear? anything above 35-45 mph and it will feel like neutral. Passing gear is actually only 1st gear. When you press down the pedal, it forces the transmisson to shift into low gear.

Dec 16, 2013 | Oldsmobile Alero Cars & Trucks

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1991 Volvo 240 has problem with automatic transmission not being able to shift to higher gear. Previously, orange overdrive arrow would stick or flash, and overdrive would intermittently engage and...

What is happening is the tranny is going. They can try to replace the selenoid, but really, you need a rebuild. Whomever charged you to remove the light, probably messed things up more. Volvo's typically lose overdrive before losing all the other gears. It is time for a rebuild. Go to a reputable tranny shop who knows volvos.

Jul 31, 2010 | 1991 Volvo 240

2 Answers


try a full flush and filter.
hot ATF fluild flows more easy thru clogged filter.
or bad vac modulator or governor or its tiny filters.

you need a AT expert , if the flush dont work.
there are many on car tests.

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You need to have the transmission flushed and have new fluid put in. As oil warms up, especially old oil. It loses viscosity and will not lubricate the gears as it should.

Jun 12, 2009 | 1996 Honda Accord

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Will not shift into high gear, arrow light does not come on

it sounds like a transmission issue if its not shifting into third gear id have it looked at as soon as possible you dont want to mess the whole transmission up

Jan 22, 2009 | 1991 Volvo 240

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The only fluid expansion tank I know of is for the cooling system,and if that is the case you my have a leak in the transmission cooler that is built into the radiator.

Nov 30, 2008 | 1989 Volvo 240

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Volvo 240 GL Transmission

You have an overdrive relay issue. The tansmission is really a four-speed box, but the OD selector either locks our fourth gear or allows the car to shift normally into fourth. I use the OD on my volvo all the time, because the revs drop in half when the OD is activated, The relay is located behind the glove box, toward the center console. $10 buck on Ebay and your transmission should shift correctly again. I would try that BEFORE more expensive fixes, like OD solenoid $200 or transmission control module. Just for kicks a picked up a spare ECU on Ebay for $10 because these get costly if and when they go. Easy fix, though, a couple of plugs.

Jun 12, 2008 | 1989 Volvo 240

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