So I've been fighting with a stumbling mis-fire on the old Mustang and this has been going on for about a year now :( First off I thought it dodgy petrol but two tanks of V-Power soon disproved that. I did run a code checker with the trusty Torque Pro Android app and no stored codes. Did the MAF clean, did sparkplug change as it was original ones in there from beginning. Spark plug intervals are 100k but really 5yrs in and you think yeah time for a change. Non of this fixed this issue...
So finally i had a look round and realised I could use Forscan for free if all i wanted to do was read stuff from the car and reset error codes. Got myself a cable and downloaded the windows progam and boom there was the fault P0024. Cam timing issue, bank 2 exhaust cam over advanced. Cue much messed around with Ford who did zero diagnostics but instead swapped the VCT solenoids about and said yeah that's it. Um no, it wasn't as the code was still there and i could hear and feel the same issue as before. So knowing how they'd basically done hee haw digging and allegedly swapped the solenoids but how could we know... went back to another trusted and very busy garage and I bought a replacement VCT solenoid (Ford OEM no less) and actually got it swapped out. Sadly this did not fix the issue. The next stage is terrifying.
This is changing the Cam phaser / sprocket but thats inside the head. To get to one phaser you have to
- remove both valve covers
- loosen the sump
- remove the single piece timing cover
- remove the primary chain if not both primary chains
- remove the secondary chain for the bank you need
- remove the VCT solenoid for the cam you want
- remove the cam with the issue
- replace the phaser / sprocket
- re-assemble in reverse order
Now you can see straight away there is an issue. If you have to take the timing cover off and a primary chain possibly two depending how they are setup, you have all four phasers and all four VCT solenoids siting there looking at you. You have both Primary and Secondary timing chains sitting there looking at you. You have many chain guides sitting there on the floor after you removed them to get to the above. So yeah, as much as it hurts you do it right you do it once. All the timing gear is getting swapped out and new seals for timing and valve covers plus it'll require the coolant radiator being removed to get the extra space to work on this. Kerching... Oil change as well then eh since the sump has to get dropped.
GT-R news. Well it got all new belts, all new fluids, all new brake pads (disks were fine), wheel alignment done, couple of electrical things tidied up, OEM airbox fitted and then it's rained pretty much every day since! Oh, it got MOT'd as well. No issues.
Happy days.
