2004 XC90 5cyl No start

Post by **vectek** » 18 Feb 2015, 17:40

Hi, I am stumped on this one. Any info is helpful. I have a no start. Checked the basics; compression, fuel, spark, all good. Backfired a couple of times when cranking. Checked marks on cams and crank, all marks line up. Had 2 codes show up during testing; ecm 3000 and 3010 exhaust and intake cam sensors. Checked with Vida, can read cam sensors working, and see crank rpm, when cranking. Even swapped cam and crank sensors, just for fun and still no start. Swapped over maf, same problem. Really scratching my head on this one. Any ideas?

draser · Post by **draser** » 25 Feb 2015, 07:40

Backfires are a sign of bad timing, I'd recheck that. Codes seem to concur.