Quote:
Originally Posted by just-john
Thanks Mike,
Initially, I completely misunderstood your first instruction and disconnected the plug with the engine running which is where I got the original yellow/blue reading from.  
I do have 3.96 volts on the yellow/blue wire with the plug connected and the key at position two, this drops to 1.05 volts as soon as the underbonnet pump cuts out.
-John. |
Very interesting,it shows the intank pump provide some pressure and the UBP
the complement.
At least all is correct on this side.
Are you sure of your injector leakback test ?
Mike