Search found 5 matches

by rsvr
Wed Oct 25, 2023 5:12 pm
Forum: Diagnostic discussion
Topic: Vivaro 2.0 M9R-788 Cam/Crank sync issues
Replies: 7
Views: 5291

Re: Vivaro 2.0 M9R-788 Cam/Crank sync issues

hi thanks so much for getting back too me! This is a strange one! when the problem first started it lost all power and the engine was running very uneven on tickover then it wouldnt start at all so we did a diagnostic scan and it was coming up with a cam crank correlation! it was then left for a mo...
by rsvr
Tue Oct 17, 2023 6:05 am
Forum: Diagnostic discussion
Topic: Vivaro 2.0 M9R-788 Cam/Crank sync issues
Replies: 7
Views: 5291

Re: Vivaro 2.0 M9R-788 Cam/Crank sync issues

Hi, Only thing to be careful of is that there seems to be some variation, even between the same engine configurations, which is confusing, so I'm not even sure the xtrail will be the same. With that said, if your output looks virtually identical then I guess its probably the same. What I can tell yo...
by rsvr
Tue Sep 20, 2022 8:06 pm
Forum: Diagnostic discussion
Topic: Vivaro possible Cam timing issue
Replies: 1
Views: 6683

Re: Vivaro possible Cam timing issue

I know this is a long shot, especially since this user has posted once and a long time ago, but here goes. I've seen this same fault recently on a vivaro too. The first tooth after the timing mark on the crank reluctor ring (pulse generator) is significantly damaged. You can clearly see in the wavef...
by rsvr
Fri Sep 02, 2022 10:24 pm
Forum: Diagnostic discussion
Topic: Vivaro 2.0 M9R-788 Cam/Crank sync issues
Replies: 7
Views: 5291

Re: Vivaro 2.0 M9R-788 Cam/Crank sync issues

Hi. The main problem is related to the faulty signal of the crankshaft sensor. This, in turn, is due to a damaged signal disk. The reduced voltage on the camshaft sensor is due to the fact that when the starter is running, the on-board voltage has decreased. Hello, Yes you are correct. I just wante...
by rsvr
Thu Sep 01, 2022 8:54 pm
Forum: Diagnostic discussion
Topic: Vivaro 2.0 M9R-788 Cam/Crank sync issues
Replies: 7
Views: 5291

Vivaro 2.0 M9R-788 Cam/Crank sync issues

Hi, New to Picoscope but just picked up a scope to try and diagnose a no start Vivaro. I'll keep it short as possible. Vivaro was working perfectly, driving very well, then one day it wouldn't start. DFC showed problem with Cam sensor, so swapped for genuine one. Still the same issue. Using differen...