Quantcast




All times are UTC - 6 hours [ DST ]




Ask A Question Reply   
Author Message
 

contributions: 1
2002 F150 4.6 egr sys. problem I have checked ohm readings on all voltage points and they are all in operating range voltage checks are a problem signel volts should be no higher than 4.9 I actuly have same as source voltage now I suspect a short in wireing harness.


Share on FacebookShare on DiggShare on DeliciousShare on TechnoratiShare on TumblrShare on Google+
   
Reply with quote  
* Search   
 
User avatar

contributions: 1898
Images: 37
Location: Oregon
lets start from the beginning. why are you checking your egr system?

if you have had it scanned and got a code, what was the code or codes you had?

If you have a vacuum operated egr valve, connect the egr valve to a vacuum pump (or manifold vacuum) and apply vacuum to the egr valve. When the egr valve opens it should make the engine run very rough. Sometime it will be so bad the engine will die. That's a good egr valve. If the engine does not run really rough of if it doesn't make much difference than the normal idle, you have a bad egr valve or the egr ports are plugged up.

If you have a scanner that you can hook up and look at the data stream, look at the readings for the PFE or DPFE. then do the test of the egr valve. the PFE or Dpfe readings should change a lot as the egr valve opens. A lot of times the dpfe sensor will plug up and not see when the egr valve opens.

I don't understand when you say "checked ohm readings on all voltage points and they are all in operating range" I would need to know what you are measuring and what you are expecting to see so I can follow your diagnosing.


   
Reply with quote  
Ask A Question Reply   


   Similar Topics   Author   Replies   Views   Most Recent 
New Articles View the first 4x4 problems in ford truck

in Ford Trucks

fish

1

1077

Wed Nov 26, 2014 4:08 am

carriedi View the latest

New Articles View the first EXHAUST PROBLEMS Ford Escort

in Ford Cars

jdpril20

1

1191

Sat Jan 23, 2016 3:02 pm

carriedi View the latest

New Articles View the first 2005 f150 5.4l problems

in Ford Trucks

logieb

6

1717

Wed Apr 30, 2014 10:44 am

logieb View the latest

New Articles View the first 2007 ford

in Ford Cars

amanda

1

1359

Sat Nov 22, 2014 5:03 pm

carriedi View the latest

New Articles View the first 92 Ford Escort

in Ford Cars

Tibo

1

1484

Fri Nov 28, 2014 10:53 pm

carriedi View the latest

New Articles View the first 93 ford ranger

in Ford Trucks

fordrangerxlt93

4

2065

Fri Aug 12, 2016 6:42 pm

carriedi View the latest

New Articles View the first 13 ford mustang

in Ford Cars

pewkie1266

1

1592

Sun Jun 22, 2014 1:14 am

carriedi View the latest


All times are UTC - 6 hours [ DST ]



Search for:
Jump to:  
Contact Us