Hi all, My Cat 320C prefic AMC recently had a cat reman main pump installed, has only done about 200 hours since. Was using it the other day and all was going well when all of a sudden the speed of all functions dropped by at least 50%. I unplugged the powershift solenoid and all the speed came back. Cleaned the plugs with brake cleaner and plugged it back in and it went back to reduced speed again. Could this be my problem and is there any way to test the solenoid? Also the auto idle stopped working at the same time. Machine has done 17k hours Thanks in advance! Glenn
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