diag results
Author
Discussion

hoppo4.2

Original Poster:

1,548 posts

210 months

Monday 15th June 2015
quotequote all
I managed to get a connection on a mates old laptop but I only had a few mins.

Coolant temp was showing 110 gauge showing 85

Both lambda sensors show 0.01

Adaptive was 18 and 35

Tps shows 14 one and 18 the other with the engine not running.

The map pressure was 1018 at idle I was told this is very high maybe a partly blocked cat?

GT6k

944 posts

186 months

Monday 15th June 2015
quotequote all

You need first to get the banks physically balanced so that both sets of butterglies are open the same amount at idle. To do this you need a flowmeter. Once you have done this the pots need to be moved to get them to read the correct value at idle. Only then can you start getting any sense out of the other sensors. This is all covered in the manual.

TimJM

1,497 posts

234 months

Tuesday 16th June 2015
quotequote all
Is this a s6 or AJP?

The temp being that far out across the gauge vs ecu is most likely a combination of two things. The gauge over reading - but they all do that and the coolant temp sensor being on the way out. Mine had corrosion around the wires/connector from the temp sensor (that feeds the ecu) and some water/damp in there and was also a mile apart like yours. A new temp sensor and now it is pretty close to the gauge.

The lambdas sound toast they should be switching not constantly 0.01 so get some new ones of those in.

As for the adaptives/throttle readings you need to setup the engine (so get the throttle pots issue sorted and balanced), reset the adaptive and go for a drive then look at the new readings.

Good luck.

Jhonno

6,430 posts

165 months

Tuesday 16th June 2015
quotequote all

fatjon

2,298 posts

237 months

Tuesday 16th June 2015
quotequote all
The MAP pressure sensor on the AJP (not sure about S6) reads atmospheric not manifold pressure. It is just a correction for changes in altitude. 1018 seems about right for most places in the UK.

hoppo4.2

Original Poster:

1,548 posts

210 months

Tuesday 16th June 2015
quotequote all
Anyone got a part number for the water temp sensor its a sp6 engine

FarmyardPants

4,297 posts

242 months

Tuesday 16th June 2015
quotequote all
At least you've found your cold start problem, was gonna suggest in your other thread that the ecu thinks the engine is hot.