From member Kranz: To reset the "time for regular service" message, the steps are: - turn the ignition key to position I - then press and hold the odometer reset button - turn the key to position II - hold the odometer reset button until the “I” message icon flashes - quickly release the r...

A '98 V70 GLT presumably has a Motronic 4.4 ECM. volvo850diag v0.8 can issue M44 test commands to: - run fan on high, or - run fan on low. A summary of how to use volvo850diag to test the '98 V70 GLT fan speeds: - Download latest volvo850diag.zip . - Unzip with WinZip, 7-Zip, etc (not with Windows E...

A '98 V70 GLT presumably has a Motronic 4.4 ECM. volvo850diag v0.8 can issue M44 test commands to: - run fan on high, or - run fan on low. A summary of how to use volvo850diag to test the '98 V70 GLT fan speeds: - Download latest volvo850diag.zip . - Unzip with WinZip, 7-Zip, etc (not with Windows ...

I tested the 50E pin with the red lead and hooked up the black lead to a jumper cables going back to the ground on the battery. Readings went from 14 to 0 see video: I looked at video. Your voltages are 143mV (note mV symbol in top right corner of screen) and 0. 143mV=.143V I expected you to get 12...

The issue is likely your AC compressor clutch gap. Easy to diagnose and short term fix with some zip ties to effectively shim the gap a bit tighter. Easy to do on P1 chassis cars as the compressor can be accessed by pulling front right wheel. Thread on it here: https://www.matthewsvolvosite.com/foru...

I wish you luck!

If you told me the bottom end was knocking, then I'd be less surprised.

Neil.