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Re: Headlights blinking(dimming). SOLVED! V70-XC70 1998

posted by  someone claiming to be Rick on  Thu Dec 28 06:11 CST 2000 [RELATED]

My Volvo dealership replaced the air pump check valve/air pump and this has seemed to solve the problem. The air pump was attempting to start in the morning (when the car was cold), couldn't, and was drawing power, which in turn dimmed the lights. The following is from the work order:

***Customer states on cold starts, headlights dim and brighten a few times- O.K. after warmed up. Checked charging system and battery- O.K. - Suspect dimming and brightening caused by a malfunctioning air pump.

***CK engine light- engine light on. Air pump check valve allowed water into air pump. Checked for codes- found codes 442 and 448- troubleshoot- Replaced air pump check valve and air pump- cleared codes and checked system- O.K. today.

Parts:

1 1271764-1 Gasket

1 9125623-0 check valve

1 9179271-3 air pump

1 977965-3 hose clamp

1 978176-6 hose clamp

1 980613-4 hose clamp

Total time 1 hour.....no charge-warrenty.

The car has 35,150 miles on the odometer. Thanks to all for the help. Rick





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