2004 Volvo L150E, was being used without issue, throw a "trans shifting solenoid" code, we changed the one and it was back to normal operation. A few days later two more tested out of spec 20-23 ohms. Loader pulled up to the shop, we changed the two other solenoids, the loader backed up in both 1st and 2nd but when shifted into forward it was "slip in trans clutches". The trans has never slipped before, seems like some freak thing after changing the solenoids. The solenoids changed where Reverse, then Forward and 2nd gear. Had the dealership out, they say things checked out with the solenoids but they cant figure it out. They want to hook up pressure gauges for the "clutches". How could the loader operator totally fine then have this issue? I feel like it cant be something serious. Is there a torque converter lock up solenoid? Thanks
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L150E Transmission issues
- Thread starter AndyWofle
- Start date
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- Tags
- l150e transmission
funwithfuel
Senior Member
For starters, did you replace the coil or the entire solenoid assembly. As a rule, I never disturb the stem unless I have a pressure issue. Did you verify that each solenoid coil is absolutely on the correct stem. It is very easy to mix them up. The computer is monitoring the resistance values for each solenoid , nothing else. When it says, 2nd gear forward. It is looking at convertor speed against engine speed. It wants to see a stalled turbine shaft speed until moving. If it detects movement, it triggers clutch slippage.
I would go back and verify all connections one by one. It might be easier with a helper. Follow the manual for your specific machine, DO NOT TRUST THE MARKINGS ON THE CONNECTOR MANIFOLD!
I don't have prosis in front of me, but if necessary, myself or one of the other gentleman who know Volvo will post up the information you need.
Good luck
I would go back and verify all connections one by one. It might be easier with a helper. Follow the manual for your specific machine, DO NOT TRUST THE MARKINGS ON THE CONNECTOR MANIFOLD!
I don't have prosis in front of me, but if necessary, myself or one of the other gentleman who know Volvo will post up the information you need.
Good luck
I changed the entire assembly as that’s what the dealership did for the reverse solenoid. Now with the possibility of mixing up the wires, I did forward and 2nd according to my diagram. Would it still move in reverse 2nd gear like it does now? I will try and double check the wires. Could it be a faulty stem? Since it’s only watching the resistance of the coil?
funwithfuel
Senior Member
Default start up is always 2nd gear whether forward or reverse. Unless you manually select first gear or press the kick-down button first never comes into play, normally. Do you have the service literature for your machine? Otherwise you have to look closely between the ribs of the connector lock nut. It will identify the lead as SA, SB etc. That has to be matched with solenoid position, which is not always "as cast" in the housing.
Let's back up a step and see what is acting up. Place the APS II switch in service mode, which is all the way to the right.
Manually select first fwd, then first rev. Then with 2nd and so on. Record which direction and range errors out. That should help you narrow it down. Then If all the wiring is correct. I'd pull pull the stem and check for damaged o-rings
Let's back up a step and see what is acting up. Place the APS II switch in service mode, which is all the way to the right.
Manually select first fwd, then first rev. Then with 2nd and so on. Record which direction and range errors out. That should help you narrow it down. Then If all the wiring is correct. I'd pull pull the stem and check for damaged o-rings
Had a volvo tech out as i was busy, he tells me he swapped the solenoids around to see if the problem followed one. They're considering it has something to do with the internal pressures, they want to come back with gauges and see if the spools are moving and allowing oil flow like they're supposed to. Not sure what that means, but what stumps me is that it drove just fine before changing the solenoids, Blows my mind.
funwithfuel
Senior Member
Yeah, no. That doesn't track. 'ERROR-GEAR SHIFTING SOLENOID ' is not and does not translate to 'CLUTCH SLIPPAGE DETECTED '.
They either plugged em in wrong or damaged an o-ring on installation. The odds of one causing another are super slim.
They either plugged em in wrong or damaged an o-ring on installation. The odds of one causing another are super slim.
funwithfuel
Senior Member
Did you try the manual gear section to determine where this fault is triggered?
No I still have to try putting that switch into “service”. All I had tried was selecting 1st on the rotary shifter then selecting reverse. The loader moved in both 1st and 2nd reverse. Both 1st and 2nd forward caused “clutch slippage”.
I have a picture diagram of the solenoids at the coil and stems. Do you have a picture for which ones should be which up at the manifold where they all plug into that harness?
I have one new whole solenoid and stem. Should I try install it in the forward solenoid spot? Vasoline on the orings at install? Or I have the two old stems I could also try.
I have a picture diagram of the solenoids at the coil and stems. Do you have a picture for which ones should be which up at the manifold where they all plug into that harness?
I have one new whole solenoid and stem. Should I try install it in the forward solenoid spot? Vasoline on the orings at install? Or I have the two old stems I could also try.
funwithfuel
Senior Member
Here goes. Everything you wanted to know and more. The first attachment is the most comprehensive but does go off in the wreds a little. If you have a gauge, with the supplied information and a little common sense, you should be ok.
Good luck
Good luck