I have a 97 E150 v6 4.2L that has had the fuel pump, push rods, fuel filter, coil, plugs, and wires replaced it was running great then all of a sudden it started backfiring real bad and when driving had no power. Thats when friend tried changing plugs wires filter coil and still no help could it be the (alldata site calls it a misfire sensor or another sensor? Please help


IS there anyone out there with advice? I am without a car unless I can get this van running and my daughter just found out she is pregnant I need to get it back up and running.

Thank you for any n all help

 

Camshaft Position Sensor Fixed my backfire issue in my 2001 E250 4.2L V6, but i still have a loss of power.

 

These two links might also help you...
1) Part 1 -The Basics of Crank and Cam Sensors and How to Test Them
2)Ford Workshop Manuals > F 150 2WD Pickup V6-4.2L VIN 2 (1997) > Powertrain Management > Computers and Control Systems > Camshaft Position Sensor > Component Information > Technical Service Bulletins > Customer Interest for Camshaft Position Sensor: >

Good Luck!

 

Replacing that sensor was next on my list of things to try. Someone else said the timing was off but it sounds like it would be easier to replace the sensor to see if that fixed the issue.


P.S. sorry for the delay in responding I have had a hectic week

 

Check the threads on no power glowing exhaust manifolds. They found crank balancer pulley keyway all worn. apparently throws the timing off. Quite a few posters found bad keyway on the dampener pulley sleeve. bl2009

 

WOW! I had just drilled out my cats and reattached everything last week and my problem still existed of no power. I bought some new spark plug wires too just to eliminate the possibility. Needless to say i was just about to pull the synchronize out to inspect it because i only replaced the sensor thinking i overlooked something because P0340 returned. After taking your advice i found this thread...

https://www.ford-trucks.com/forums/1...olds-4-2l.html

Low and behold this poster took the words right out of my mouth on the symptoms exactly and i amazingly enough replaced all the same parts he did. It was like deshavu! LOL Tomorrow i am pulling the harmonic balancer to verify that is my problem too! This sounds very promising and makes perfectly good sense! Thank You bl2009!

 

I know this sounds crazy but mine did the same thing plus had what I thought was a misfire. Spark plug in cylinder 2 was loose. I tightened the plugs and she is back to running like a top. Make sure the plugs are tight and the plug wires are snug.

 

Well, I removed my Harmonic Balancer and noticed the rubber had began to separate very little, roughly 1-2 mm. The key way slot on balancer and the camshaft looked like new. No play at all. Took no chances and ordered a new one none the less and installed it yesterday. It does not run perfect, but i do notice a slight improvement. I still waiting for my new Mass Airflow Sensor to arrive from china. They sent me a empty box the first time! It is scheduled to arrive tomorrow. If that sensor don't fix the last issues,,, I will then be leaning toward the EGR ports in the lower intake manifold to be clogged like in the following video.


I also have not checked all of my injectors to see if they are clogged either. But this video seems to be how my new symptoms are.

I will keep you posted as I swap damn parts until i find the broken one. LOL They were all broke to begin with and needed replacement. I bought new plugs and wires so i know that is not my issue, but may be one for another!