2000 2.6 S80 "Check Engine Light"
#1
2000 2.6 S80 "Check Engine Light"
About 3 mo. ago the "Check Engine" illuminated on morning start. There was no perceptible change in engine performance so I drove it several days and then took it to a Volvo mechanic who read the codes ECM 261 and ECM 271. He said this signaled a vacuum leak, which he could not find. The computer was reset. No light for several days and then it reappeared. I returned and the mechanic did a "smoke test" but did not detect a leak. He checked O2 performance scope and opined that back sensors might be malfunctioning so they were replaced. Computer was reset. Light stayed off several days and then back on. I replaced fuel cap. Light stayed on, then after several days it was off. Then back on. Found another Volvo mechanic. He checked it, found nothing, reset. Light off a couple of days and then on. He replaced fuel filter and put injector cleaner in the system. Said I might need another smoke test. There is no perceptible change in engine performance with light on or off. I'm thinking its a stray signal that comes on when computer does whatever it does on start up. Anybody else have this problem with an S80
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ErnstlS90
Volvo S90 & V90
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10-23-2008 08:37 AM