Its fluffing !
Discussion
A car doesn't move on a rolling road, only the wheels rotate. Are you refering to having 240v present in a car that is infact going from A to B? If so check out the Techtronix range of field osciliscpoes that have a rechargable battery pack.
Edited by sam919 on Wednesday 6th February 19:11
I'd actually challenge the likleyhood of success of reading a scope trace in an environment such as a moving car. Especially if you are driving it!
Whilst this may be a scientific technique, it would be infinately more simple to diagnose the map.
ECU flutters are down to 3 things:
Bad sensor data
Bad mapping
Bad wiring
On any programable ECU you can also diagnose the map in real time without the car moving or it being on a rolling road, using the logging functions.
Why are we arguing about this anyway? I'm sure samurikid probaly can't be arsed to read this now anyway.
Whilst this may be a scientific technique, it would be infinately more simple to diagnose the map.
ECU flutters are down to 3 things:
Bad sensor data
Bad mapping
Bad wiring
On any programable ECU you can also diagnose the map in real time without the car moving or it being on a rolling road, using the logging functions.
Why are we arguing about this anyway? I'm sure samurikid probaly can't be arsed to read this now anyway.
Actually he can - the trouble is he cant understand what you are all talking about, so on monday he is starting at the begining of the thread and seing what on earth happens .........cos that is what usually sees him through all this sort of thing. After that he will get back in the car, smoke out the rear end and carry on seeing what happens !
I know i would rather be sitting in a caterham flying about than trying to fart around with any sort of electrical test equipment!
Yes the mappage does seem an easier techique, i use the o'scope quite a bit so im used to setting it up and playing about with it.
Yes the mappage does seem an easier techique, i use the o'scope quite a bit so im used to setting it up and playing about with it.
Edited by sam919 on Saturday 9th February 09:41
Samurikid,
First thing to do is establish what ECU you have. This makes a key difference to the process of resolution. The ECU in both cases is located under the bonnet, above where your passengers feet are. There is alos a balck plastic 'wedge shaped' box - this is the MFU - you don't need to worry about this.
If it looks like this one, its a non prgramable Rover MEMS. Best action is to find another SLR owner with this system and swap them over. Note if the fault follows the ECU to the other car.
If your ECU looks like the black one in the pic below, then you have the later MBE system. This has much more capability for diagnosis.
Let us know which you have.
First thing to do is establish what ECU you have. This makes a key difference to the process of resolution. The ECU in both cases is located under the bonnet, above where your passengers feet are. There is alos a balck plastic 'wedge shaped' box - this is the MFU - you don't need to worry about this.
If it looks like this one, its a non prgramable Rover MEMS. Best action is to find another SLR owner with this system and swap them over. Note if the fault follows the ECU to the other car.
If your ECU looks like the black one in the pic below, then you have the later MBE system. This has much more capability for diagnosis.
Let us know which you have.
Edited by Fat Arnie on Sunday 10th February 11:01
Well well well ! Had people playing with it today , using you lot as ideas, and it seems that the finger is pointing to the ECU. They managed to talk to it, but there was not much of a conversation really. It is a Rover ECU.
So as I see it I can do the following -
Change the old Rover for a new rover ..........I know its pants but isnt it cheaper ?
Do nothing and hope its not doing too much harm ....Suicide aint painless .
Go and get a swanky new one .........more money but I have a feeling this will be the best idea.
Any guidance chaps ?
So as I see it I can do the following -
Change the old Rover for a new rover ..........I know its pants but isnt it cheaper ?
Do nothing and hope its not doing too much harm ....Suicide aint painless .
Go and get a swanky new one .........more money but I have a feeling this will be the best idea.
Any guidance chaps ?
I would doubt if its the ecu,they very rarely go wrong.If its only at high revs you could be looking at a harmonic vibration problem.Check the throttle pot as I have seen them vibrate at high revs causing this type of problem. Take the crank sensor out and check its clean. Look for anything that could be vibrating at high revs.
Best of luck.
Best of luck.
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