NikTheGeek said:
Its been on an Autologic for a health check when I first got it and they gave it a clean bill of health apart from "failing blend motors". Not failed, but failing. No engine/ecu/eas/etc errors so I was quite pleased. (Of course the map sensor was connected for that and didn't show a fault - but I don't know if it would depending on how it fails) I'm going to get a Nanocom eventually, but I've got 4 air bags on order first. I might get a replacement map sensor just to see. It's less than the cost of a tank of fuel....

tnx all

Nik
Click to expand...

So if your MAP was working ok on data logger and there are no stored DTC's have a look at the fuel trim and feed back voltage from the O2 sensors should be switching nicely between rich and lean, any doubt I would try known good O2 sensors.
 
I have no advice but I'm wondering if your cars a v8 or diesel because I have a readout on computer of 19 from my diesel and I'm sure it should be higher!
 
owl said:
So if your MAP was working ok on data logger and there are no stored DTC's have a look at the fuel trim and feed back voltage from the O2 sensors should be switching nicely between rich and lean, any doubt I would try known good O2 sensors.
Click to expand...

It's a diesel
 
NikTheGeek said:
Its been on an Autologic for a health check when I first got it and they gave it a clean bill of health apart from "failing blend motors". Not failed, but failing. No engine/ecu/eas/etc errors so I was quite pleased. (Of course the map sensor was connected for that and didn't show a fault - but I don't know if it would depending on how it fails) I'm going to get a Nanocom eventually, but I've got 4 air bags on order first. I might get a replacement map sensor just to see. It's less than the cost of a tank of fuel....

tnx all

Nik
Click to expand...
Unless the MAP fails totally it will not show a fault as far as I'm aware, you need to look at live data to see the pressure reading change.
 
In that case if you do get it on live data check the MAP as advised by Datatec also look at the pump timing compensation as I remember it should be 1-2 deg once warm if out much this indicates a pump prob and also it's worth checking the cam timing if you can borrow the tool
 
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