[03s10newtome]

I have an 03 S-10 2.2 5 speed it will idle fine no prom lens but if you have it under any load it starts missing terrible if u push the throttle slowly it will rev up fine but if you gun it it will miss till about 3500 rpm. Iv replaces spark plugs and wires coil packs and I just can’t get it to straighten up

 

[manbearpig]

How do you know it is spark related?

 

[03s10newtome]

I’m not 100 % that it is spark related but I tested fuel pressure it’s good compression is good it’s missing on cyclinder number 4 I just can’t figure out why

 

[manbearpig]

Got any codes? You could try swapping two of the injectors to see if the miss moves from 4 to the other cylinder.

 

[mghuertas01]

Switch the cable the #1 and leave at the spark in the #4 and the cable #4 put the #1 at the coils if the problem goes to spark 1 code 301 the cable needs replacement

 

[TranceAmerica]

The cable? WHICH cable are you refering to?

 

[rimara]

Swap the 1 & 4 spark plug cables down at the coil.

 

[speedtrapp]

I have an 03 S-10 2.2 5 speed it will idle fine no prom lens but if you have it under any load it starts missing terrible if u push the throttle slowly it will rev up fine but if you gun it it will miss till about 3500 rpm. Iv replaces spark plugs and wires coil packs and I just can’t get it to straighten up

Flex fuel sensor is going or is bad. Same thing happened to mine.