Desperate help needed

[BlueChappy570]

2005 Mustang Gt premium, 5 Speed manual, 143K miles, Roush CAI, MSD Coils, fuel injectors 3 yrs old, BBK catted X-Pipe, Muffler delete…

So, I drive to Walmart the other day and everything was fine. I start my car afterwards and I hear a valve tick. It was time for an oil change so I thought that may be why the ticking was there. I pull out of the parking spot, and as I press the gas, it stuttered so bad, the car was almost bucking…

I start limping it home and after 2 minutes of that, it ran decently. It still was not at full power, maybe 80% power, but the bucking and huge hesitation was gone.

I run the codes and got a bunch. See pictures.

After reading some forums, I see that one of the codes could be caused by bad diodes from the alternator. I replaced the alternator and cleaned the codes. Car still did the same thing. Idled great, but as soon as I go to drive it, it hesitates and bucks. I

changed the Cam Positioning Sensor on Bank 1 (passenger side), still same thing. I changed my oil, MAF Sensor, Fuel Filter. Still same thing… idles great… as soon as I go into first gear and give it gas, it grumbles, hesitates, and bucks.

Please help….

 

[Bullitt95]

I suggest you remove the passenger side valve cover and carefully inspect the cam followers, cam lobes, and cam phaser. At 143k miles, there's a good chance that either a cam follower or a cam phaser has failed.

 

[Bullitt95]

The valve timing components seem to have a design life of about 150k miles under normal use so they're definitely due for replacement. Don't use anything else but Ford Performance items:

https://performanceparts.ford.com/part/M-6004-463V

https://performanceparts.ford.com/part/M-6529-3V

You can Google the part numbers to search for the best prices.

I'd also strongly recommend that you replace the oil pump at the same time. The '13-14 GT500 unit is an inexpensive upgrade and fits directly. Just add a new 4.6 3V oil pump pick up tube with screen to complete the installation.

 

[manicmechanic007]

Damn straight, time for a timing job and replace it all with a Ford kit
Chains, tensioners, guides and phasers
You only want to do it once