Got a 17748 : Cam vs Crank Sensor not correlating - I'm stumped down to last option. Suggestions ?

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01-11-2009, 01:16 AM

VR_Life

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Got a 17748 : Cam vs Crank Sensor not correlating - I'm stumped down to last option. Suggestions ?

2.7T runs very rough after having head gasket replaced, and heads cleaned.

Group 93 shows Bank 1 Phase = 17~25kW, while Bank 2 Phase = 2kW

Did the group 94 test, failed on Bank 1.

So I :
- Checked the Cam/Chain (links between teeth are correct, sprockets exactly aligned at TDC)
- Redid the T-Belt
- Replaced the Bank 1 Cam Pos Sensor
- Swapped the Bank 1 vs Bank 2 Cam Tensioner solenoid

=> No change in symptoms

Only thing I can think of left is to replace the entire Tensioner assembly - seems higly unlikely.

Any other suggestions ?

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01-11-2009, 04:10 AM

4Driver4

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What are you using to align the belt?

Is it possible that cam tensioners were swapped? IIRC, they are different.

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01-11-2009, 10:20 AM

Kris Hansen

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Is the sensor in the tensioner on a 2.7t head? It's not on the 2.8...

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01-11-2009, 11:15 AM

VR_Life

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Using the real tools : Crank Lock Pin + Cam Locking bar

Left the cam sprockets bolt loose & untorqued while re-installing the belt. Pre-Tensioned it correctly, torqued and then cranked it to see if it still lined up. Verified the Cam alignment marks. It was/is perfect.

Swapping tensioners ? I'll check - it's unlikely the shop doing the heads could have done that. But I'll check.

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