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[9jdm]

Hi folks really need some help with my 2.6.
I had oil leaks on cam covers and replaced the seals etc.
after rebuild it was running lumpy and I could here hissing. Stripped plenum off again and found a crack in the long vacuum pipe that runs under it. Taped it up and reassembled. This time even worse and got the spanner on dash.
Pedal trick lists following errors.
P0120 and p0220 throttle position switch a and b.
P1300 robs error because of empty fuel tank instrument. It is low on fuel!
Also got p1700 service vehicle soon which I guess is due to the other faults.
What have I missed. Everything seems connected and tight.
Really appreciate some help.

[Doctor Gollum]

Check the throttle plug is fully home. The clips break, but can be secured reliably with a small cable tie.

The cracked vacuum line is connects the throttle body and the fuel pressure regulator and should run through the lower plenum. This might be the cause of the P1300 as it will affect the fuel pressure, (although I don't recall the Omega being bright enough to worry about this electronically). It will cause a vacuum leak which will cause rough running at idle.

The P1700 code is a red herring as it is a gearbox code. Check that you haven't damaged the cam sensor wiring around the front inboard side of the 246 cam cover.