Question about 1986 Volvo 740

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Omar ive changed my automatic gearbox on my 850 Volvo,it goes into R,L,3 and D but the problem is that it doesn't change gears while im driving in D what is the problem? please help

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If you can, put an OBDII scan tool on it and look for codes in the P0730 range (incorrect gear ratio). Any P07XX code is a transaxle code. Alternatively, check that your shift lever is adjusted properly. Sometimes it may seem correct but since there are switches there it is possible that they are not making content in D.

The other possibilities are low line pressure (check/change the transaxle oil), low oil level (do not overfill, it may damage your newly-installed transaxle or cause fluid to be ejected out of the fill tube), valve body problems or sensors. Got a MIL lit? That's a sure bet there's something the computer wants to tell you about.

Posted on Nov 08, 2013

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6ya6ya
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Posted on Jan 02, 2017

  • 160 Answers

SOURCE: My mechanic struggles to get automatic gearbox fix - help

has he tried to replace the b4 servo cover and the seloniods volvo has a lot of problems with those and they have computer reprograms also

Posted on Nov 12, 2008

repairpal
  • 128 Answers

SOURCE: Fault in Automatic Gearbox and Check Engine Light

If the transmission is still operating ok, you can drive it, but you need to get it checked, since a fault has been detected by the transmission computer.

Bret
RepairPal.com

Posted on Nov 19, 2008

repairpal
  • 128 Answers

SOURCE: Problem with 2002 Volvo S60 automatic Gearbox

Make sure that you have the transmission software updated. Volvo has had many upgrades on their transmission's control software to address these exact symptoms.

Bret
RepairPal.com

Posted on Nov 20, 2008

  • 30 Answers

SOURCE: VOLVO S60 2004 D5 3RD GEAR GEARBOX CRUNCH

Sounds as if a synchronizer is going out in 3rd gear, or 3rd gear maybe stripped. I would get it checked by a tranny (transmission) shop before it ended up costing you more money. There is a possibility that there may be some shavings on that gear as well, which would just need cleaned.

Posted on Jan 11, 2009

  • 54 Answers

SOURCE: Pulled Codes Volvo 1995 850 Need Help

I would lean toward the MAF sensor they were known for going bad, which would cause all these codes. It wouldn't hurt to take the IAC off and spray it out with carb cleaner and some WD40, just to cover your bases. Both these units were made by Bosch and the MAF failed alot more often then the IAC.

Posted on May 23, 2009

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