Search found 321 matches

by Fat Freddy
Sun Feb 10, 2013 10:01 am
Forum: Diagnostic discussion
Topic: Inductive peak to peak volts
Replies: 3
Views: 3343

Re: Inductive peak to peak volts

Found this capture today from an Audi showing 63V peak to peak @ 5300RPM
Image

HTH
FF
by Fat Freddy
Sun Feb 10, 2013 8:56 am
Forum: Automotive kit hardware
Topic: How to create reliable stable Current Drain
Replies: 13
Views: 12317

Re: How to create reliable stable Current Drain

Have you considered making your own resistive load using Nichrome wire? http://en.wikipedia.org/wiki/Nichrome
Same as your heater element but customised to your needs.

HTH
FF
by Fat Freddy
Thu Feb 07, 2013 2:09 am
Forum: Diagnostic discussion
Topic: I.A.C Valve????
Replies: 26
Views: 15500

Re: I.A.C Valve????

Just had an IAC on a wrangler (TJ) (short on to fuel rail inside conduit, rail had pushed through split). 4 wire. Each pair was always switching so two high and two low. As a thought looking at yours I would thinking Brown/Green channels OK. Blue/Red open circuit somewhere after the IAC. But as Robs...
by Fat Freddy
Thu Jan 31, 2013 11:38 am
Forum: Diagnostic discussion
Topic: Vw golf 1.6 runs bad
Replies: 13
Views: 8146

Re: Vw golf 1.6 runs bad

Is the capture taken at normal operating temp ?
Has me thinking too. Thats one long injector duration.

FF
by Fat Freddy
Mon Jan 21, 2013 12:26 am
Forum: Diagnostic discussion
Topic: WPS waveforms
Replies: 16
Views: 11478

Re: WPS waveforms

Works out @ cyl #1 to me going by +1 rule....... I'm not sure what you're asking with the cranking compression capture ? Did you have the throttle wide open as you would with a gauge ? Rats! You beat me to it. To busy making pretty pictures. FF http://i232.photobucket.com/albums/ee88/Nobbyclrk/Miss...
by Fat Freddy
Sun Jan 13, 2013 12:35 am
Forum: Automotive kit hardware
Topic: Temperature Measurement and the Fluke 80TK
Replies: 9
Views: 9597

Re: Temperature Measurement and the Fluke 80TK

I think the look-up table would give, in theory, a far more accurate result. I had considered making one up myself but found using off the shelf thermocouples, the offset required daily adjustment depending on ambient as you have pointed out. So opted to take advantage of the K type linearity output...
by Fat Freddy
Thu Jan 10, 2013 9:55 am
Forum: Automotive kit hardware
Topic: Temperature Measurement and the Fluke 80TK
Replies: 9
Views: 9597

Re: Temperature Measurement and the Fluke 80TK

FioranoCars wrote:I guess I should try tapping into a sensor on a car's exhaust to prove it... that'll be this afternoon then!

FioranoCars wrote:I'll post a waveform data file a bit later showing the readings I get from the thermo sensor.
Any update/images on this yet?

FF
by Fat Freddy
Fri Jan 04, 2013 12:05 am
Forum: Automotive kit hardware
Topic: WPS Compression Hoses
Replies: 23
Views: 28197

Re: WPS Compression Hoses

Thanks Rob i just measured a few plugs most standard 14mm plugs have thread length of about 17mm.
The O'ring once rolled off will allow a collar to be removed allowing a longer thread. With collar removed you have 19mm less O'ring. :wink:

HTH
FF
by Fat Freddy
Wed Dec 19, 2012 10:30 am
Forum: Automotive kit hardware
Topic: Temperature Measurement and the Fluke 80TK
Replies: 9
Views: 9597

Re: Temperature Measurement and the Fluke 80TK

... but I think I can answer that now for myself! The Pico 4x23 scopes have a resolution of 10mv, where a k type probe has a Thermoelectric Voltage in Millivolts (ie the output) of -2.2mv at -50degC to 0mv at 0degC to 4.1mv at 100degC to 10mv at about 250degC and about 20mv at 500degC. So based on ...
by Fat Freddy
Mon Dec 17, 2012 11:53 am
Forum: Automotive kit hardware
Topic: Temperature Measurement and the Fluke 80TK
Replies: 9
Views: 9597

Re: Temperature Measurement and the Fluke 80TK

That probe is for a direct connection to a K type thermocouple. I had assummed (possibly incorrectly) the connector made up some sort of referance/cold junction. As I'm able to measure a voltage at room tempreture. I'm not sure what causes that junction although it can be worked out and that is what...