I have codes 171,174 ive changed both o2 sens,maf,pcv and hose,checked for leaks

What is your question?

Im not sure were to go with it now? The truck should run bad but it runs great. Ive reset the codes and any place from 15 to 100 miles I get the check eng lite again with the same codes P0171,P0174 lean bank 1 and 2.

F150 4.2 in Ridgecrest CA

Sep 23, 2014

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What are the best Ford repair shops?

RepairPal Certified shops can diagnose and repair your 2004 Ford F-150 Heritage. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

2004 Ford F-150 Heritage auto repair 2004 Ford F-150 Heritage estimates 2004 Ford F-150 Heritage questions 2004 Ford F-150 Heritage problems 2004 Ford F-150 Heritage recalls

What is your question?

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I have codes 171,174 ive changed both o2 sens,maf,pcv and hose,checked for leaks

What is your question?

F150 4.2 in Ridgecrest CA

Sep 23, 2014

1 Reply

Popular Answer

pushrodon Sep 24, 2014

Most likely still a vacuum leak..... 'Somewhere'

F150 4.2on Sep 30, 2014

Ya but were? Any ideas or were to look?

pushrodon Sep 30, 2014

Most effective way to find a leak is by smoke testing!

F150 4.2on Sep 30, 2014

Checked for leaks with smoke and nothing. It just passed smog and the same two codes came back again? It runs good, but when it gets warm and your on the hwy and put the peddle to the floor it bogs down no power its just flat.

Reply in Thread

Join the conversation!

Popular Answer

What are the best Ford repair shops?

RepairPal Certified shops can diagnose and repair your 2004 Ford F-150 Heritage. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

2004 Ford F-150 Heritage auto repair 2004 Ford F-150 Heritage estimates 2004 Ford F-150 Heritage questions 2004 Ford F-150 Heritage problems 2004 Ford F-150 Heritage recalls

1 Reply

Popular Answer

pushrodon Sep 24, 2014

Most likely still a vacuum leak..... 'Somewhere'

F150 4.2on Sep 30, 2014

Ya but were? Any ideas or were to look?

pushrodon Sep 30, 2014

Most effective way to find a leak is by smoke testing!

F150 4.2on Sep 30, 2014

Reply in Thread

Join the conversation!

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I have codes 171,174 ive changed both o2 sens,maf,pcv and hose,checked for leaks

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