2005 5.4 with cam phaser lockout installed
Asked by GuruTLS7W Jun 28, 2018 at 06:38 PM about the 2005 Ford F-150 Lariat SuperCrew 4WD
Question type: Maintenance & Repair
I have the cam phaser delete and sct x4 tuner
installed from a well known shop in my town. It’s
runs and drives good doesn’t stall but it idles rough
and when stopped in gear the trucks throughs a low
oil pressure light but my oils good. It has brand new
plugs and coils, new fuel filter and pump. I tried
talking to the shop about it but they just shrug the
question off. Any help would be appreciated. Sorry
for my poor smelling and grammar.
9 Answers
Did you try a new sending unit? cheapest thing to try,the old one might be lazy. For the rough idle, did you check for a vacuum leak?
054x4lariat answered 6 years ago
does it idle rough when you go in reverse or as you slow down for a stop sign or red light?
It idles rough at and idle and when you stop at a light then shows low oil pressure but only for a second then bounces back up. I have not tried either of those. It only has 105,xxx km on it
So you don't want to resolve the problem because it has only 105,000 km on it????
A bad idle control valve could be the problem.
It sounds like you need a new oil pump, or oil pressure sensor. Part of the reason the Cam Phasers go out is a weak oil pump. When you replace it, go with the upgraded pump that has a stiffer metal back as that will fix the issue.
I’ve fixed a lot of these for this exact problem. First you should check your oil pressure hot, load the engine in gear then let off the throttle quick, if it drops to 5 or less check the crankshaft endplay, the two piece thrust can stack on top of rack other and cause a large oil pressure loss that will lead to engine failure. Putting a high volume oil pump on willjust mask the problem for a while. The other probable cause is the cam bearing surface damaged/scored. I have replaced heads on trucks with less than 20k on them
Have you tried a different volume of oil? Are you using a 5w20 . and when you put the eliminator in how bad was the ticking before because you can have other damaged parts from the phasers like the timing chain you should always change new tensioners , the spacers and chain just for the gp. Most likely its a timing issue and fixing that your pressure will return to normal depending on further parts that may be effected from the phasers.
