remedave
New Member
where in the world are you anyway?
up north
where in the world are you anyway?
that's anywhere above the m4 then
Anything past Watford is a bit iffy and beyond Oxford is just a wilderness of strange!yep for you southerners i class down south anywhere below the A66
Anything past Watford is a bit iffy and beyond Oxford is just a wilderness of strange!
Unfortunatly not, anything north of Watford is where things start getting a squiffy....I presume you mean south of Watford?
Unfortunatly not, anything north of Watford is where things start getting a squiffy....
South of Watford ain't to bad....
When you get south of the Thames and into the Surrey Hills is when things start perking up a bit!
You could,but it would not really be what you ought to be looking for.The whole point of scoping it is to see what the ecu sees while the engine is running.If there is any intereference while its running you will see it on the trace.A decent scope will allow you to save,then go back over pages of data and zoom in on any areas of interest.You could then also see if its a constant fault or intermittent.technically i can use this wave form to scope it in slow time my tapping into the sensor(s) and rotating the engine by hand i should be able to reproduce these results on one slow time engine cycle. anyone disagree ?
Oh and i nearly blew my disco up in the process 300tdi auto, it didn't like a 3 mile hill climb with a massive trailer and a range rover sat on it too !!! it got mighty hot didn't get in the red but just before it and the oil pressure light was on at tick over !!! the header tank looked like it was going to explode and the oil burning of the side of the block was a nice touch.
Luckly i had done the AC fan mod ( for got to switch them on in the first place DOH) so i sat in a lay-by for 5 min at 1500 RPM until it calmed down all is well with it, what a solid engine !!! pitty the 4.6 isn't as solid !
OK,good progress,does the scope have more than one channel ? If it does,see if you can scope the crank and cam together on both cars. You can then see if the cam timing is the same on the good car.Right, here we go !!!
I have acquired on loan a identical vehicle to mine, i have also acquired a oscilloscope, i have scoped both vehicles as the wires enter the ECU and both vehicles have more or less an identical wave form, they both out put the same voltage on tick over so i would pretty much say there is only two things left either the cam timing is so far out the ecu can't make any sense of it or the ecu if ruined
Obviously i would transfer the ecu from one car to another but i have no way of syncing it with the becm at the moment i did try a swap on the off chance, but it wouldn't start !!
i took the liberty to change other parts off it like the MAF and its cam sensor and its crank sensor it all made no difference.
Ok well, i have scoped them both on dual and it would appear that they are running very similar patterns,
the offending vehicle is slightly different timing wise but i would say not enough to cause any offence to the ECU (saying that i don't know what if any the tolerance level is form the ecu before it discounts the Cam-sensor)
So the jury's still out on this but in the mean time i am going to swap the ecu's just as soon as i can get software to enable me to do so, any recommendations on the software i should purchase.