So I have been having an cylinder 4 misfire for quite some time now. It only happens when the engine is warm and if I turn the truck off and then restart it... Taken it to 2 mechanics now and no one can diagnose the problem.
I started to think about it and right around the time of the engine misfires, I had installed a keyless entry/security system. Not thinking about this at all to cause a problem, I started doing some research and found some weird articles about people installing aftermarket security systems and having engine misfires because its sucking to much voltage from the ignition circuit?
Has anyone installed an aftermarket system on there truck and had this problem?