clarkr Posted June 30, 2025 Report Share Posted June 30, 2025 Hi all, having problems in cruise control mode. 1996 Volvo 850 Turbo Wagon - Automatic - Engine Type 57 - 2.3 L - 127,000 miles Lately with Cruise Control I am getting an RPM surge between 300 and 500+ RPM at random times even when the CC switch is ON and NOT engaged. Getting surges when running under CC also. At a stop with foot on brake it sometimes surges like that and is quite frankly pretty scary. This does NOT happen when I turn off the CC switch. Only when it is on. No surges with the CC switch in the off position. Any idea's where to troubleshoot this? Any help would be greatly appreciated. Thanks in advance, Clark Link to comment Share on other sites More sharing options...
clarkr Posted July 14, 2025 Author Report Share Posted July 14, 2025 UPDATE: I replaced the Cruise Control relay with one I salvaged a few years ago. So FAR it seems to be working correctly now. Still more tests in the works but no surging so far. Clark Link to comment Share on other sites More sharing options...
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