Hello all just bought my first titan. I love it. but something doesnt seem right. truck sat for a yr b4 got it. well cleaned her up did tune up fuel filter oil filter. it had a stuck throttle valve code when i got it. Cleaned it cleared code. no other codes. it seems if i go more than quarter throttle it falls on its face till about 4k rpms. i just dont get it.
Fuel filter? There isn't one on the Titan. There is a screen on the fuel pump, inside the tank.
Clean the MAF (Air Flow) Sensor, that may help. Also clean or replace the PCV valves. Check the air cleaner element. How many miles on the truck? Spark plugs should be changed at 100K miles.
After you work through the above list I'd have the fuel pressure checked. Quite a few fuel pumps have failed in Titans.
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