[Brenton350]

Thanks for the quick response!

2015 Jeep Cherokee Trailhawk. 3.2 Pentastar

I had to replace BOTH intake and exhaust camshaft on bank 1 (firewall side). They each had rocker arm failures and chewed the cam lobe up bad. Like Buda, I followed the MCM video as well as JT. After getting it back together I get the P0016. So I took it back apart just to check everything. Put it back together and now I’m getting P0016 again as well as P0017. Jeep feels terrible and almost like it doesn’t have power steering.

 

[Brenton350]

Hi @Brenton350 ,

Welcome from NY to the Forum. Can you tell us which Cherokee you have? (year, trim, engine, powertrain type (e.g. FWD, AD1, AD2)

Also, you didn't mention any work being done on your Cherokee so this code just came up on it's own, correct?

Thanks for the quick response!

2015 Jeep Cherokee Trailhawk. 3.2 Pentastar

I had to replace BOTH intake and exhaust camshaft on bank 1 (firewall side). They each had rocker arm failures and chewed the cam lobe up bad. Like Buda, I followed the MCM video as well as JT. After getting it back together I get the P0016. So I took it back apart just to check everything. Put it back together and now I’m getting P0016 again as well as P0017. Jeep feels terrible and almost like it doesn’t have power steering.

 

[Gary Kline]

Thanks for the quick response!

2015 Jeep Cherokee Trailhawk. 3.2 Pentastar

I had to replace BOTH intake and exhaust camshaft on bank 1 (firewall side). They each had rocker arm failures and chewed the cam lobe up bad. Like Buda, I followed the MCM video as well as JT. After getting it back together I get the P0016. So I took it back apart just to check everything. Put it back together and now I’m getting P0016 again as well as P0017. Jeep feels terrible and almost like it doesn’t have power steering.

MCM is excellent. JT too, he's excellent but talks too much

OK, I'll assume you did everything per the videos and got the timing chain back on correctly and also while in there, tightened your oil gallery bolts and torqued all the cam caps (and phaser's oil control bolt), to spec.

So... you replaced the camshaft...

#1. To confirm, you got a replacement camshaft for the Pentastar 3.2 engine, correct? Not the 3.6? (they're different and not interchangeable however will physically fit).​

​

#2. Did you run a Cam/Crank Re-Learn using an app like AlfaOBD, DiagFCA or JScan (or another diagnostic tool)?​

​

#3. You kept any magnetic tools away from the sensing wheel on the end, correct.​

​

#4. Soaked the new rockers (and hydraulic lifters, if replaced, in oil first).​

​

#5. Got the camshaft position sensor fully inserted into the valve cover? It tends to stop naturally a little above the full-down position. It should be at the same level as Bank 2's.​

 

[Brenton350]

MCM is excellent. JT too, he's excellent but talks too much

OK, I'll assume you did everything per the videos and got the timing chain back on correctly and also while in there, tightened your oil gallery bolts and torqued all the cam caps (and phaser's oil control bolt), to spec.

So... you replaced the camshaft...

#1. To confirm, you got a replacement camshaft for the Pentastar 3.2 engine, correct? Not the 3.6? (they're different and not interchangeable however will physically fit).​

​

#2. Did you run a Cam/Crank ReLearn using an app like AlfaOBD, DiagFCA or JScan (or another diagnostic tool)?​

Yes sir I actually had a very hard time finding an exhaust cam for the 3.2 it was a slightly different part # however. Number being #68088712AC. The dealership told me that this is the replacement for my old exhaust can 68088712AA

I didn’t have a scan tool that could do a CCR so I borrowed a friends ICON T7, unfortunately it failed everytime.

 

[Gary Kline]

Yes sir I actually had a very hard time finding an exhaust cam for the 3.2 it was a slightly different part # however. Number being #68088712AC. The dealership told me that this is the replacement for my old exhaust can 68088712AA

I didn’t have a scan tool that could do a CCR so I borrowed a friends ICON T7, unfortunately it failed everytime.

• The part number is fine (revised parts follow the designation AB, AC, AD, AE etc. ). That's the correct part, just the latest version.
• Note, I added a couple additional things to the post above after saving it (#'s 3-5). Check those as well.
• You need to do the cam/crank re-learn which resets the relationship between the cam position sensors and crankshaft position sensors to account for minor variations in replaced parts (cams, sensors etc.) Pickup an OBD2 adapter such as a vGate vLinker MC+ plus the app, AlfaOBD (Android or Windows). This will allow you to do the cam/crank re-learn which I'd do assuming the other items were covered.

​

 

[Brenton350]

• The part number is fine (revised parts follow the designation AB, AC, AD, AE etc. ). That's the correct part, just the latest version.
• Note, I added a couple additional things to the post above after saving it (#'s 3-5). Check those as well.
• You need to do the cam/crank re-learn which resets the relationship between the cam position sensors and crankshaft position sensors to account for minor variations in replaced parts (cams, sensors etc.) Pickup an OBD2 adapter such as a vGate vLinker MC+ plus the app, AlfaOBD (Android or Windows). This will allow you to do the cam/crank re-learn which I'd do assuming the other items were covered.

View attachment 241781
​

Just to verify.. will the ICON T7 actually not work to do a cam/crank relearn?

 

[Gary Kline]

Just to verify.. will the ICON T7 actually not work to do a cam/crank relearn?

No idea, I don't have an ICON T7. You'd need to see if under the Jeep screen - Engine, you have an optio for Cam-Crank Relearn.

 

[Brenton350]

No idea, I don't have an ICON T7. You'd need to see if under the Jeep screen - Engine, you have an optio for Cam-Crank Relearn.

Yes sir it has the cam crank relearn on the ICON T7. I attempted the procedure a dozen times. Each time it said “cam crank relearn procedure failed.”

When I look on the “live data stream” it shows each camshaft. It shows the exhaust camshaft/crankshaft difference as 16.6-16.7 degrees. The rest are -1 to 3 degrees difference.

 

[Gary Kline]

Yes sir it has the cam crank relearn on the ICON T7. I attempted the procedure a dozen times. Each time it said “cam crank relearn procedure failed.”

When I look on the “live data stream” it shows each camshaft. It shows the exhaust camshaft/crankshaft difference as 16.6-16.7 degrees. The rest are -1 to 3 degrees difference.

Was the car off when you ran the procedure? Otherwise I would see if there's information on an ICON forum or their tech support website explaining why you're getting the procedure failed message. Either way, since you're getting that message, you have no way to know if it's working or not.

 

[Brenton350]

Was the car off when you ran the procedure? Otherwise I would see if there's information on an ICON forum or their tech support website explaining why you're getting the procedure failed message. Either way, since you're getting that message, you have no way to know if it's working or not.

The ICON T7 on screen instructions were to start the car and have it running for the Cam Crank Relearn procedure. It seems as if it idles the engine up to approx 1000-1100 rpm for the procedure. And almost seems to run smoothly. Then after 90 seconds or so, the screen says “Cam Crank Relearn Failed”. As it flashes that on the screen, the engine idles back down and runs rough