andyfreelandy
Well-Known Member
Brill idea to compare 2 cars readings. How about we put together a set of readings for a 'correct' car and then some notes to help fault-find when out of spec??
This site is the place to inject readings from every fault known to man...........
I have an Icarsoft and happy to log what my car looks like, but I wouldn't guarantee that it is 'correct' !
This site is the place to inject readings from every fault known to man...........
I have an Icarsoft and happy to log what my car looks like, but I wouldn't guarantee that it is 'correct' !
Lowbank
Active Member
Thanks Nodge,
I am going to read a 55 plate TD4 tomorrow as well to compare.
The. 52 plate was just idling on the drive and I got fed up waiting for it. to go higher.
I have another MAF, not sure if its the same so will check and perhaps try fitting it tomorrow and read it again.
I think its a good idea to have sticky thread of Good readings at different settings.
I am collecting a full set of spare sensors so I help people who are close.
I am going to read a 55 plate TD4 tomorrow as well to compare.
The. 52 plate was just idling on the drive and I got fed up waiting for it. to go higher.
I have another MAF, not sure if its the same so will check and perhaps try fitting it tomorrow and read it again.
I think its a good idea to have sticky thread of Good readings at different settings.
I am collecting a full set of spare sensors so I help people who are close.
andyfreelandy
Well-Known Member
Just taken a set of readings on my (appears to be o.k) TD4 2002 134k miles. Three different temperatures as it warms up, but not fully warm. Another at around 2k RPM.
Also noted that mine has a P0404 fault code. This shows as an EGR out of spec fault. The EGR has been bypassed for a long time and not seen this fault code before! Any ideas??
Moderators - can we put a document up like this for all to add to?? Also, I'll work up a definitions of terms page. Thanks
Also noted that mine has a P0404 fault code. This shows as an EGR out of spec fault. The EGR has been bypassed for a long time and not seen this fault code before! Any ideas??
Moderators - can we put a document up like this for all to add to?? Also, I'll work up a definitions of terms page. Thanks
andyfreelandy
Well-Known Member
Good stuff. What is the MAS (mine hasn't got that on the options)?
I'm trying to find out what capacitor is.
Also, which cars of yours have EGR By-pass and which don't please?
All my entries the cars have bypass. One shows a P0404 fault and the other doesn't !!
I'm trying to find out what capacitor is.
Also, which cars of yours have EGR By-pass and which don't please?
All my entries the cars have bypass. One shows a P0404 fault and the other doesn't !!
Lowbank
Active Member
The MAS reading was taken by selecting the second down option at the start menu, OBDll diagnose,it selects ISo9141, press ok
Then select data stream,
Then view all items.
does not work on the 52 plate just tried
at tick over pedal 1 demand. 0.77% pedal 2 0.39% sensor supply both 5.01v
Then select data stream,
Then view all items.
does not work on the 52 plate just tried
at tick over pedal 1 demand. 0.77% pedal 2 0.39% sensor supply both 5.01v
Nodge68
Well-Known Member
Is the MAP sensor blocked on the 52 plate car? The MAP should show 100 Kpa when not boosting. 100 is atmospheric pressure. Anything under atmospheric at idle would suggest a blocked or faulty sensor. Or a very coked up inlet manifold. Anything under 100 Kpa with the engine off would suggest a blocked or faulty sensor.
The capacitor is what fires the piezo elements in the injectors
It should be around 80 Volts when the injectors are firing.
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Lowbank
Active Member
Hi Nodge68,
I did a search in the engine bay the other day and the connector had fallen of the MAP, reconnected now and showing 100.0 when engine is off. Car is running a lot better.
My 54 plate is still running like a dog.
Flat spots on gear change and low power, doing 400 miles to a full tank of fuel.
I have a spare MAF, just need time to fit and see if that helps.
I did a search in the engine bay the other day and the connector had fallen of the MAP, reconnected now and showing 100.0 when engine is off. Car is running a lot better.
My 54 plate is still running like a dog.
Flat spots on gear change and low power, doing 400 miles to a full tank of fuel.
I have a spare MAF, just need time to fit and see if that helps.
Nodge68
Well-Known Member
Glad you sorted out the MAP signal. It will run better when it knows how much fuel to put in
The MAF signal is all wrong on the 54 plate car. Definitely worth changing the MAF.
