Search found 243 matches

by volrem
Fri Jun 22, 2018 3:38 pm
Forum: Help me fix my car
Topic: is this a bad maf wiring fault ? ecu ? any help, thank much
Replies: 12
Views: 21695

Re: is this a bad maf wiring fault ? ecu ? any help, thank m

Fuse F35 shares common power with MAF, EGR and turbo control solenoid. Martinjensen did you compare ECM pinout to wiring diagram? I saw that there is an error. Two ECM pins correspond to wiring diagram but one has different pin number. Not sure if it's error in VIDA or in EWD. Either way it would be...
by volrem
Fri Jun 22, 2018 10:01 am
Forum: Help me fix my car
Topic: is this a bad maf wiring fault ? ecu ? any help, thank much
Replies: 12
Views: 21695

Re: is this a bad maf wiring fault ? ecu ? any help, thank m

This MAF doesn't have 5V feed from ECM. It uses only 12V from fusebox. Ground is from ECM, MAF signal is digital and fourth wire is for air temp.
by volrem
Sun Jun 10, 2018 7:22 pm
Forum: Automotive kit hardware
Topic: How difficult would it be....?
Replies: 3
Views: 5371

Re: How difficult would it be....?

Not difficult at all.


Just go to Tools -> Preferences - Colors and choose any color you like.
by volrem
Sun May 20, 2018 7:50 pm
Forum: Forum feedback
Topic: Purchasing PicoScope equipment
Replies: 2
Views: 11985

Re: Purchasing PicoScope equipment

Just change quantity to 0 and update cart from the left lower corner.

Make sure you select country and shipping method first otherwise it will not update.

But I agree that little red cross to remove product would be good.
by volrem
Tue Mar 13, 2018 9:08 am
Forum: Diagnostic discussion
Topic: Piezo injector operation. Current vs voltage
Replies: 41
Views: 45418

Re: Piezo injector operation. Current vs voltage

Could admin please move last posts to separate thread and leave this for fundamental stuff only.

I believe there is a need for several test on piezo to get facts straight. At the moment there are so many different theories here.
by volrem
Mon Mar 12, 2018 4:26 pm
Forum: Help me fix my car
Topic: Volvo V70 VVT-solenoid trace
Replies: 14
Views: 20885

Re: Volvo V70 VVT-solenoid trace

If it shows actual to be around 0 degrees then timing should be ok. I don't remember exactly. To check you have to lock crank and cams. If you have PWM tool to control VVT solenoid then use it. And if you don't have then get one or you can try to apply 12 directly. Engine running of course. There co...
by volrem
Mon Feb 26, 2018 11:48 am
Forum: Help me fix my car
Topic: Volvo V70 VVT-solenoid trace
Replies: 14
Views: 20885

Re: Volvo V70 VVT-solenoid trace

ECM-640A is stored if cam position deviates too much (over 10 degrees for longer than 15 seconds). Put Pico aside for a moment and use your scan tool. There are two data PID-s to check. Camshaft actual and camshaft desired value. At idle check that these mach. And then do this when driving. When val...
by volrem
Fri Feb 23, 2018 8:09 am
Forum: Help me fix my car
Topic: Volvo V70 VVT-solenoid trace
Replies: 14
Views: 20885

Re: Volvo V70 VVT-solenoid trace

Do you still get fault code ECM-6400 Signal too low ? There is no information in technical pubication how this condition is checked (voltage or current). But it is electrical for sure. If there is position problem then code ECM-640A or ECM-640F is stored. Your current and voltage trace is different ...
by volrem
Sat Feb 17, 2018 11:55 am
Forum: Help me fix my car
Topic: Volvo V70 VVT-solenoid trace
Replies: 14
Views: 20885

Re: Volvo V70 VVT-solenoid trace

Hello, Here is the capture with a new solenoid. Brand new or used? What I noticed but only afterwards was that upon starting the engine, the camshaft sprocket moves in and out of about 5-10mm.. Really? I have see about 3mm play at most. It should be leaking oil a lot with so much play (moves out fr...
by volrem
Tue Feb 13, 2018 4:52 pm
Forum: PicoScope 6 Automotive software
Topic: AC Coupling
Replies: 6
Views: 19348

Re: AC Coupling

Different application have different current for sensors.

Most Volvo applications have current between 7mA and 14mA. No info in documentation about crossing point current though. May well be 10 mA.