Good info!! I have a question that maybe you or someone can answer. I just had my timing belt changed on my 87 Pathfinder, didn't want to do it because I just got done putting in a clutch in my 300ZX. Well when I got my Pathfinder back from Goodyear it runs fine when it is cold but when it reaches operating temp. It runs like crap. I talked with Goodyear they say that it a preexisting problem but it wasn't. I looked at my ECU and in Mode 5 it's showing a crank angle problem (3 red flashes). My question is it possible that the have one of the cam gears one tooth off?? My next step is to take it apart myself to check and how to prove that screwed up and maybe get back some of my $575.00 back. Any thoughts. Thanks Coop