[famous ray]

About 4 months ago my truck started to ping while going up hill or trying to pas another vehicle at highway speed ...it never tripped a code or put the check engine lite on....a friend with a snap on scanner scanned it for me..key on engine not running and came up with code p1208(info on scanner was same as my symptons)...i changed knock sensor,EGR valve,Egr tube and left side exhaust manifold(tube rotted in manifold.)and a set of plugs. If anyone has run into this problem let me know...all help appreciated.......Thanks
Ray

 

[Mr Mac]

Pinging can be caused by the cooling system not drawing enough heat away from the engine, spark plugs or carbon deposits that get too hot, low octane gasoline or a very lean mixture.

The simplest thing to do first is try a higher octane fuel or an additive to see if that fixes the issue and then go from there.

DTC Code P1208 DTC Code: P1208 Description: Cyl #8 Non-Contributing Probable Causes:

1. Sensor or solenoid faulty
2. Connector terminal contact is damaged or corroded
3. Wire harness - Check harness for correct voltage, open, short to ground or short to voltage
4. Update control unit software - Check for the latest control unit update
5. Powertrain or Engine Control Module faulty
6. Fuel injector(s) faulty

 

[famous ray]

Mr Mac, thank you for taking the time to answer my question.I will be out there Saturday checking and trying to see what works..i will keep you posted.Thanks again.....Ray

 

[Mr Mac]

No problem, Ray!

Mac