Search found 10 matches

by wellspin
Mon Oct 23, 2017 7:46 pm
Forum: Case studies
Topic: image of the vacuum transducer in the intake manifold
Replies: 1
Views: 4486

Re: image of the vacuum transducer in the intake manifold

If its a 4 cylinder no1 is 2 pulses from the sync
What problems are you having with engine,very similar to a capture I made
by wellspin
Tue May 30, 2017 9:38 pm
Forum: Diagnostic discussion
Topic: Unusual o2 sensor waveform
Replies: 6
Views: 9173

Re: Unusual o2 sensor waveform

I can take a video of the scan tool readings for short term trims,they are what I would describe as fluctuating wildly
by wellspin
Mon May 29, 2017 1:08 pm
Forum: Diagnostic discussion
Topic: Unusual o2 sensor waveform
Replies: 6
Views: 9173

Re: Unusual o2 sensor waveform

Hi I was using the engine block as ground. Live data is showing the voltage drop,and then pausing or stumbling accompanied by an engine stumble. The engine is suffering misfire issues,that come and go,sometimes plenty of power other times the car wont get out of its own way,Everything else seems to ...
by wellspin
Sun May 28, 2017 6:36 pm
Forum: Diagnostic discussion
Topic: Unusual o2 sensor waveform
Replies: 6
Views: 9173

Unusual o2 sensor waveform

Just gotten round to scoping the O2 sensor voltage on a renault scenic 1.6 16 valve. The voltage was behaving oddly during graphing in live data.The voltage seems ok but the trace is full of noise,not what Id expected from studying various videos etc,the engine does have a cracked exhaust manifold a...
by wellspin
Sun May 07, 2017 12:33 pm
Forum: Diagnostic discussion
Topic: adding math channel
Replies: 4
Views: 6364

Re: adding math channel

It was taken using a x10 probe,looking at the specs I realise that something is a miss with wiring or the ecu possibly.
ill do some checks and report back
by wellspin
Tue May 02, 2017 6:30 pm
Forum: Diagnostic discussion
Topic: adding math channel
Replies: 4
Views: 6364

adding math channel

Had my new diagnostic toy a while now,a 3223 certainly a very nice piece of kit. I tried the pico diagnostics cylinder balance with mixed results,still a work in progress I think. This led me to using the math channel for misfire detection.I have played with this feature using the equation (A,36) an...
by wellspin
Sun Apr 30, 2017 4:39 pm
Forum: PicoDiagnostics software
Topic: pico diagnostics cylinder balance
Replies: 5
Views: 7272

Re: pico diagnostics cylinder balance

I have read a little bit about using that method.Have you any files etc on your experiences of using it setting up etc Indeed I do have several files. You can find a few on the forum to look at too ! You may do well to take your own sample, create a misfire and practice with it - Practice makes per...
by wellspin
Sat Apr 29, 2017 5:49 pm
Forum: PicoDiagnostics software
Topic: pico diagnostics cylinder balance
Replies: 5
Views: 7272

Re: pico diagnostics cylinder balance

excellent,Im going to have a go tommorow
does any body know the number of teeth on renault scenics flywheel?
by wellspin
Sun Apr 23, 2017 8:01 pm
Forum: PicoDiagnostics software
Topic: pico diagnostics cylinder balance
Replies: 5
Views: 7272

Re: pico diagnostics cylinder balance

Hi WellSpin I don't often use "Pico Diagnostics" Software - Perhaps I should ? I find that using a CKP capture with an RPM Math Channel riding on it is RAW data. It will pick out intermittent misfires and there is no danger of averaged results. You should try it - I think you will be impressed at t...
by wellspin
Sat Apr 22, 2017 4:39 pm
Forum: PicoDiagnostics software
Topic: pico diagnostics cylinder balance
Replies: 5
Views: 7272

pico diagnostics cylinder balance

Just been trying out the cylinder balance test with my two channel 3223,but I have a small issue with the results. One cylinder C is always at 1.00 unchanging while its misfire count is varying etc,cant be right? The car is a 2001 renault scenic 1.6 16 valve.I had all the ancillaries on to get a goo...