99 550 Engine problem need help

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Jul 7, 2011 | 03:50 PM

#16

tdpower

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Quote:

Originally Posted by Donald E Wingate

Ok I figured out the buzz test and here are the results 2 & 4 sounded weak. Then it gave me a

P1272 cylinder 2 High to Low side open
P1274 cylinder 4 High to Low side open

Also ran a Contribution Test and got

P0266 Cylinder 2 injector Circuit Contributor Balance Fault

Cylinder 2 and 4 are both on the drivers side. I would go ahead and pull the valve cover and check that 9 pin connector.

Jul 7, 2011 | 03:51 PM

#17

clintbonnie

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From: Ardenvoir, Washington

I would start pulling valve covers and checking plugs and wiring.... .. valve cover gaskets are re-usable..

Jul 7, 2011 | 04:12 PM

#18

Donald E Wingate

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Thanks for all the advice looks like the next logical step is to pull the valve covers atleast the drivers side first Ill let u know on the progress alittle later.

Jul 12, 2011 | 12:58 PM

#19

Donald E Wingate

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I pulled the drivers side valve cover and found that the connector was loose. I pushed it back together ran a buzz test and everything sounded fine. Picked up the new retainer clip from ford part # 1C3Z-14A163-AA put everything back together and truck seems to be running great. Thanks again for all the help.

Jul 12, 2011 | 01:27 PM

#20

clintbonnie

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From: Ardenvoir, Washington

The Ford clips have been known to come loose.. next time, use the 50 cent method..
Glad you got her fixed..!! (when you have time, pull the passenger side and insert the modified quarter in the connector....it is probably loose also. mine was)