Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
Hi when I started on this vehicle the maf was under reporting at 2.5 I changed kn air filter and it went to normal not sure if thats what did it but it is reporting right now I originally had a random MF on all cylinders which were going away when you revved engine up or at a high idle ok well that condition seemed to go away , I did see 4 and 5 were the predominate misfires that stayed ! I swapped both coils with other coils and the misfire did not follow and is still on 4 and 5 , one thing I did was an injector cutout test on the port injectors and for some reason the scan tool only gave me 4 cylinders to test but while cutting injector 4 there was no change in RPM , my next step actually is to do a propane vacuum leak test just so I can rule out a sneaky vac leak and then im gonna swap the injectors into other cylinders and see if the lazy fuel issue is solved, I do want to do a injector waveform but I dont think we have an attenuator im not sure if I need one with the snap on Triton? any input is appreciated tommorow im gonna do the vacuum test and then do some swaptronics......and remember. ....DONT BE A PARTS CHANGER .....Scanner danner for life sa 🤣🤣🤣🤣😃
You will be safe to check the injector circuits with your Triton, no attenuator needed.
While you have the scope out, I like a relative compression test any time I have a misfire complaint. Keep us posted 👍
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