Took my SAAB 9-5 out of a 3 month hibernation. Took it for MOT and it passed without fault. However since its been sat for 3 months the EML has come on.
Scanning it shows a faulty Crank and Camshaft sensor. Now the 2.2TiD doesn't have a Camshaft sensor as such.
I've been and bought a new crankshaft sensor and got my own fault code reader to clear the codes. What confuses me is the garage where the MOT was done, claim it needs a brand new timing chain as the current one has stretched? Runs perfectly from cold up to temperature then it goes into limp home mode.anyone had any experience with anything similar on any car?
What diagnostics did they do to come up with that? If none, that's a VERY confident diagnosis without their only evidence being a fault code relating to a crankshaft sensor.
Here's a post from the Saab forum about it:
"2.2TiD doesn't have a camshaft sensor. There is a crankshaft sensor and a position sensor in the fuel pump. The PSG16 ECU then uses the positions registered to calculate top dead centre.
Suggest you get the codes read again and post them on here. My 2002 2.2TiD had 2 fault codes, 1 was for crankshaft position sensor and the other for camshaft position sensor. Basically the 2nd was is a false code as the ECU requires the input from the crankshaft position sensor to calculate top dead centre. So my actual fault was only the crankshaft sensor."
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