P1312 is ignition coil knock detection cyl 1 and 2 and the cause is quoted as wiring open circuit/short to positive, ignition coil assy, ECM.
P1334 is as 1312, but cylinders 3 and 4.
The other thing to that would cause detonation too is low fuel octane causing detonation during acceleration. Or dirty fuel injector and dirty fuel filter. Timing would cause this but i don't think your timing is off since you can get it started. Recap, add fuel injector cleaner to your gas tank for the next 3 fill ups and try using a higher octane rated fuel like 91 and replace the fuel filter for now and see if there are any improvments. keep me posted, be glad to help.
The other thing to is if your using a oil air filter like K&N, you may have to spray clean the MAF and IAT sensor. Use MAF cleaner and follow the instructions. If the MAF and IAT sensors are dirty from oil, they will give incorect readings to your ECM casusing the improper air fuel ratio which should be 14.7 to 1. The MAP and throttle position sensor also will play a part to this problem too. After the throttle has gone past 80% or the turbo boost has started to go up the O2 sensor's go to a open loop and the MAP sensor takes over to sending information to the ECM to have the engine run richer around 11.3 to 1 so you don't have detonation under hard acceleration. Start with the prevouse suggestion and this was just something for you to think about. Keep me posted and did the parts store give you the right spark plugs??? DO NOT USE PLATNIUM SPARK PLUGS Use a good copper plugs, the platnium plugs during turbo boost will heat up like a glow plug promting detontion which is bad for turbo engines. Keep me posted.
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Engine light on seems to be running fine what should i do?
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Thank you, I will try your suggestions. I always use 93 octane so I do not think that is the cause.
Thanks again.
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