Got an egr question. If I disconnect the green vacuum line going the egr and apply vacuum to the egr diaphragm should it hold vacuum and not bleed down?

 

yes, it should

 

Ok, thanks

 

Also I checked the egr solonoid on top the egr and the resistance was 3.49. Is that in range ?

 

Depends which one you have, Lt. Grey, or Black
Ford Fuel Injection » EGR Valve Position sensor (EVP)

 

Closed EGR valve EVP resistance should be ~5500 ohms measuring between the EVP output and Signal return pins. Fully opened EGR EVP resistance should be ~100 ohms. This assumes you have the correct gray EVP sensor installed.

 

Hey thanks for the info, one other question my truck runs pretty good in park but in drive with foot on brake has a slight miss and battery voltage needle jumping back and a little.

 

Worn spark plugs/wires/Cap/rotor can cause a miss under load. Not routing the plug wires properly to prevent cross fire is another common cause of a misfire. Also using the wrong firing order can cause a misfire. Many other causes that you need to investigate if the ignition components are verified good. If you have a 2G alternator it puts out very little current at idle. It is a design flaw as well as the very common melting power plug that catches fire.

 

Correct firing order and spark plug wire routing diagram (courtesy of Steve83) for 1994 and up 5L engines and all 5.8L engines

 

Hey thanks, appreciate the info