roadtripgeorge

So i noticed a slight hesitation a few weeks ago, and it has gotten worse. Around town it is really noticeable. Not consistently, but often enough for it to irritate me. Now I think I noticed it at highway speed. It could be my imagination, so I'm not 100% sure on that, but around town it's definately there. Initially I hoped it was simple, so I changed spark plugs for NGK Iridium, cleaned MAF, cleaned throttle body, and threw in a bottle of seafoam. Still feeling hesitations. I'll be changing the fuel filter and plug wires tomorrow. I don't think it's the plug wires because I put a set of NGK wires in about 30-40k ago but I have a spare set so I figured I'd give it a shot. The truck has around 156k now so I just hope it's nothing worse. I'll also try running some fuel injector cleaner to see if it might be a clogged injector or something. That being said, my question is, could it be the torque converter locking up? I know I need to replace my cv axles, and for a minute I thought maybe it could be the axles about to grenade, but I don't know. How could I check if it's not electrical and maybe something worse like the trans/torque converter? Oh and I haven't been lucky enough to have a code thrown. That would be just giving me the answer. Any help would be appreciated!

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rbh261

I hope that you find a simple fix. I had a similar problem. I replaced all the simple stuff with no results, new coils,plugs,wire,TPS,O2 sensor and cleaned MAF. I heard off a problem some were having from an incorrect timing belt install. I pulled the front of the engine down to inspect the timing belt and accessories. I found that the belt was installed incorrectly and the crank bolt wasn't torqued properly. My crank gear had moved around enough that it had worn the woodruff key and the keyway inside the gear. Replaced the gear,belt,water pump,thermostat and crank sensor. Problem solved.

roadtripgeorge

thanks for the help. I'll give that a check. The stealership put my timing belt/water pump on at ~100k. Could it really be time to do it again?

rbh261

I wouldn't think it would be time again, but they may have used the old torque specs for the crank bolt. I had my first suspicion when I put a timing light on it and the timing was jumping all over the place. I jumped pins the pins in the diag plug under the hood like you would on a Yota with a distributor. It lets you check base timing.