misfiring

[killbuk19]

OK,96' EXPLORER SPORT 4.0 125K, MISFIRES DURING IDLE. i'VE CHANGED WIRES AND PLUGS STILL DOES IT. CAN SOMEBODY TELL ME WHY? GETTING TIRED OF IT!!!!

 

[TPLYNCH]

Try cleaning your MAS and IAC. Run search for those for more info.

 

[killbuk19]

cleaned the mas and what is the iac?

 

[evanbugay]

IT COULD BE YOUR TIMING BELT$$$$

 

[TPLYNCH]

Originally posted by killbuk19
cleaned the mas and what is the iac?

Idle Air Control valve. Cylindrical item on the side of your throttle body. There is a recent thread about it with a picture, so like I said - use search and ye shall find!

 

[SouleDancer]

Originally posted by killbuk19
OK,96' EXPLORER SPORT 4.0 125K, MISFIRES DURING IDLE. i'VE CHANGED WIRES AND PLUGS STILL DOES IT. CAN SOMEBODY TELL ME WHY? GETTING TIRED OF IT!!!!

Have you changed your oxygen (O2) sensors lately? This fixed the problem with my '96, but I was also getting a check engine light. If the O2 sensors are old, then the system cycles between rich and lean too much.
:frustrate

:exp:

 

[killbuk19]

changed all o2 sensors,replaced iac.still doing it

 

[SouleDancer]

I've seen lots of stuff about leaking intake manifold, have you read through all those topics

(I might have seen them on the ford board: www.ford-trucks.com)

 

[tom14150]

what cylder is misfiring? can be fuel pressure problem too