See user shockwaves post in the XC90 forum on PEM troublehsooting. There are links to the waveforms and testing methodology A resistance test on the PEM is useless. It is a waveform generator and converts ECM signals to fuel pump drive signals. You need an o scope and s9 electronics background to tr...

After a few days of soaking, scrubbing, and brushing with 'mean green,' the inside of the camshaft cover is sparkling: IMG_4781.jpg I do wonder, though, if I should be concerned about these marks near/on the section of the camshaft cover where the seals (I think) would normally sit: IMG_4781.jpg ca...

Looking good, S. 1999 NA has solid cams with no CVVT on either cam 1999 Turbo has exhaust CVVT 2000 NA has intake CVVT You don’t need the cam lock tool for solid cam cars, Loosen the big crank pulley nut, the use the small nuts to set the crank to TDC clearance timing mark so all the pistons are cle...

Just wanted to say " Thanks for everybody responses ! ". I've been on other forums where you feel like your alone in a field of crickets. I would " Thank " formally so it would go to your signatures but guess what ? I can't figure that bit out either :) Truly appreciate all your...

My 1999 T5 was saved by this site. I had no experience outside VAG group, and my first major foray under the hood made me go search the web for resources, way back in 2013. Of the Fora I found, the expertise and adult nature of the content here, and lack of text talking, made MVS the gold standard o...

The early throttle bodies go through about 10,000 miles of futz before they kick the bucket, it might be it got stuck from some carbon and is fine. Keep driving and keep an eye open for ETM codes

Oxford commas are like condoms of prose; easy to use, highly effective, and much safer than without.

The fact that you googled punctuation means you will always be welcome on MVS

Props to you for working it back to Stage 0, then getting it sorted out.

Don't give up!

Fly up, do 10 runs down Big Sky , drive it home

Thats probably the diode that protects the circuitry from spikes when the relay opens that blows on reverse polarity, but that should blow a main fuse upstream, failing closed circuit. Ghosting erik... Looking at the several 'reversed polarity threads' - almost all are resolved with the J relay(s) r...