Search found 41 matches

by Chartreux
Wed Sep 23, 2020 7:14 am
Forum: Subaru
Topic: Oil pressure fluctuation and AVCS fluctuation
Replies: 12
Views: 5483

FIXED : Oil pressure fluctuation and AVCS fluctuation

Now, problem is Fixed !!! https://nsm09.casimages.com/img/2020/09/23//20092308534924683417032862.png Both signals are ok and no more VVT Fail !! After lots of though and log analysis, I came to the conclusion that the ECU had many difficulties to control the AVCS solenoids, just like if they didn"t ...
by Chartreux
Fri Sep 04, 2020 7:40 am
Forum: Subaru
Topic: Oil pressure fluctuation and AVCS fluctuation
Replies: 12
Views: 5483

Re: Oil pressure fluctuation and AVCS fluctuation

I tried to check the famous banjo screen filter and decided to remove the banjo bolts that feed the avcs on the left side, where I have the problem. In the same time, I washed the AVCS rigid oil feed line. Guess what I found in the screen filter : an aluminium chip !! (bottom right on the picture) i...
by Chartreux
Wed Aug 26, 2020 12:42 pm
Forum: Subaru
Topic: Oil pressure fluctuation and AVCS fluctuation
Replies: 12
Views: 5483

Re: Oil pressure fluctuation and AVCS fluctuation

One more element to my misterious variation. Today I drove for around 1h30. I had 2 VVT fails at the begining and when engine was hot for around 30 min, both AVCS signals came back suddenly at the same level and were very "clean". No more fluctuation during 1h, all was really perfect..... I'll swap ...
by Chartreux
Thu Aug 06, 2020 8:45 am
Forum: Subaru
Topic: Oil pressure fluctuation and AVCS fluctuation
Replies: 12
Views: 5483

Re: Oil pressure fluctuation and AVCS fluctuation

If it can help; this is the same log with different VVT parameters logged. Same horizontal axis scale https://nsm09.casimages.com/img/2020/08/06//20080610422224683416952572.png https://nsm09.casimages.com/img/2020/08/06//20080610422224683416952574.png https://nsm09.casimages.com/img/2020/08/06//2008...
by Chartreux
Thu Aug 06, 2020 7:52 am
Forum: Subaru
Topic: Oil pressure fluctuation and AVCS fluctuation
Replies: 12
Views: 5483

Re: Oil pressure fluctuation and AVCS fluctuation

The mapping was not made by me, but by an official mapper. I compared the values in the tables and for both VVT1 and VVT2 they are absolutely the same. (brake points, target, duties etc etc) I zoom out the same curve and see that there is clearly a problem with VVT1. VVT2 is respect what is in the m...
by Chartreux
Wed Aug 05, 2020 8:36 pm
Forum: Subaru
Topic: Oil pressure fluctuation and AVCS fluctuation
Replies: 12
Views: 5483

Re: Oil pressure fluctuation and AVCS fluctuation

I'm back again with my problem and now I have regulary VVT Fails and I'm very often in Limp mode. I already changed both AVCS Solenoid and pulley by new OEM ones. I double checked the wiring and the connexion. Everything seems OK. What I don't understand is that suddenly the VVT1 signal always stick...
by Chartreux
Tue Jul 28, 2020 6:47 am
Forum: Subaru
Topic: Red key light on dash
Replies: 2
Views: 1000

Re: Red key light on dash

Hello,
I have a S6 PnP on my GC8 and the red light is switching off when engine is running as before I'm switching the OEM ECU.
...sorry
by Chartreux
Thu Mar 12, 2020 4:56 pm
Forum: Subaru
Topic: Oil pressure fluctuation and AVCS fluctuation
Replies: 12
Views: 5483

Re: Oil pressure fluctuation and AVCS fluctuation

Ok, good idea. I think it could be the moment to make a grounding kit and see if it solve this issue.

TimH, based on your experience, does your customer solved their problems or, at least, improved their situation with grounding ?

Thanks guys
by Chartreux
Thu Mar 12, 2020 8:12 am
Forum: Subaru
Topic: Oil pressure fluctuation and AVCS fluctuation
Replies: 12
Views: 5483

Re: Oil pressure fluctuation and AVCS fluctuation

Oil pressure sensor is STRI : https://www.stri-racing.com/replacement-sensors/replacement-dsd-oil-pressure-sensor Oil/Fuel pressure sensor , suitable to most universal application/gauges and other measuring devices* * 5VDC 0 ~ (+1,000) kpa 1,000 kpa (approx 10Bar) 0.5 ~ 4.5 VDC I have coil on plug f...
by Chartreux
Fri Mar 06, 2020 3:29 pm
Forum: Subaru
Topic: Oil pressure fluctuation and AVCS fluctuation
Replies: 12
Views: 5483

Oil pressure fluctuation and AVCS fluctuation

Hello, I'm back again with questions I'm facing to strang oil pressure fluctuation. It don't happen every day, but sometimes, one morning, oil pressure decide to fluctuate a lot. One or 2 day after it's perfect.... I don't understand what happen Firstly I though about a faulty oil pressure sensor, b...