wesley1993
NAXJA Forum User
- Location
- nj
I have a 4.0 engine that is in a 93 yj ya i no its not a xj but its a 4.0 it has 112,xxx mi on it and the problem is when you punch the gas it seems to hesitate and some times it will back fire through the intake.i have another 4.0 engine so i have swaped over some parts. hears is was i have done so far.
TPS. sencer my jeep eats thease things all the time it is not this
idel air speed sencer.
distributor.this was replaced because it was sucking up oil and no help
cap,rotor,wires.
checked compression was well with in speck.
cleaned throttle body.
indexed distribtor.
i tested the fuel pressure 30 with regulator 39 with out however upon bringing the RPMs up and letting of the gas the pressure would drop to about 27
and last it has no blink codes at all and i no i am trying to get em the right way because i have done it on diferent jeeps help thanks wes
TPS. sencer my jeep eats thease things all the time it is not this
idel air speed sencer.
distributor.this was replaced because it was sucking up oil and no help
cap,rotor,wires.
checked compression was well with in speck.
cleaned throttle body.
indexed distribtor.
i tested the fuel pressure 30 with regulator 39 with out however upon bringing the RPMs up and letting of the gas the pressure would drop to about 27
and last it has no blink codes at all and i no i am trying to get em the right way because i have done it on diferent jeeps help thanks wes