Volvo S40 - Recent Questions, Troubleshooting & Support - Page 8
Hood will not lock on 2002 Volvo S40
Check if the left and right hight adjustable stops are to high. If you put pressure above the latch and it works. This will most probably be the issue.
2000 Volvo S40
one unit that operates ratio changes and is connected to the engine is that vacuum operated actuator on the transmission
it is possible that that unit is failing , vacuum hose is leaking and that will cause ratio changes as the vacuum varies
run the fault codes to check for wiring problems or VSS or TCM problems as well
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