jstockert

1997 Scab 4.6 4x4. I know where the ks is on our trucks but does anyone here know if we can test it somehow. I have a severe power loss and on highway at 60 mph if i try to accelarate the engine pings pretty bad. I do pull a enclosed trailer that weights about three thousand pounds. I use 100 percent pure gas. I have done some test.
tps sensor
maf sensor
iat sensor
Any thoughts?

ibd2328

iTrader: (2)

The sensor produces an AC output voltage which increases with the severity of the knock. The signal is fed into the PCM and the timing is retarded up to 20 degrees to compensate for severe detonation.

ibd2328

iTrader: (2)

So many sensors to test. Is it showing a CEL or throwing any codes. Checked the cam pos. sensors?

jstockert

I have a edge sct programmer, could I monitor the timing with that or I also have a acton scanner I could hook up but I do not know what is normal on timing and when it should advance or how much.