Reply to thread

Message

<blockquote data-quote="cllake" data-source="post: 891806" data-attributes="member: 19206">2000 Ranger 4.0I bought the truck with a misfire, thought it was the injector so I changed it. It ended up having cracks in a head. So, I replaced the head and the truck ran better for a day or two. Now it is stuttering, the idle is a little off and it has low power. It is throwing codes P0171 and P0174. I have checked for vaccum leaks and ford has verifed their are none. Their are 2 brand new O2 sensors with less than 2,000 miles. The MAF is clean. I broke down and took it to ford and they 'think' it 'might' be the lower intake gasket. SO, what do you guys think it could be? Should I just pull the intake this weekend and change the gasket?<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite5" alt=":confused:" title="Confused&nbsp; &nbsp; :confused:" loading="lazy" data-shortname=":confused:" />Thanks for any and all help-Cody</blockquote>

[QUOTE="cllake, post: 891806, member: 19206"] 2000 Ranger 4.0 I bought the truck with a misfire, thought it was the injector so I changed it. It ended up having cracks in a head. So, I replaced the head and the truck ran better for a day or two. Now it is stuttering, the idle is a little off and it has low power. It is throwing codes P0171 and P0174. I have checked for vaccum leaks and ford has verifed their are none. Their are 2 brand new O2 sensors with less than 2,000 miles. The MAF is clean. I broke down and took it to ford and they 'think' it 'might' be the lower intake gasket. SO, what do you guys think it could be? Should I just pull the intake this weekend and change the gasket?:confused: Thanks for any and all help -Cody [/QUOTE]

Verification