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Engine & DrivetrainDiscussions about the engine and drivetrain of your vehicle.
This is a discussion thread titled "Hesitation/stumble", within the Engine & Drivetrain forum, part of the Technical & Vehicle Assistance Forums category.
IVE GOT A 2002 ACCESS CAB, V8., HAD IT FOR A YEAR NOW. ITS ALWAYS HAD A SLIGHTLY ROUGH IDLE. NOT SERIOUS BUT YOU DO NOTICE IT. ALSO, WHEN YOU GET ON IT AND STOMP THE PEDAL, IT WILL HESITATE/HICKUP/STUMBLE RIGHT BETWEEN THE SHIFT. HAYNES SAYS POSSIBLE FUEL INJS/FUEL FILTER/INGNITION NOT OPERATING PROPERLY (VERY SPECIFIC) AND FUEL INJECTION FAULT (AGAIN VERY SPECIFIC).
ANY SUGGESTIONS OR SIMILAR EXPERIENCES?
DAVE IN S.A.
I'd clean/check your throttle body first. You might also try a bottle of injector cleaner and see if that helps, but definitely check the throttle body and give it a good cleaning.
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Genthar
Rhino Lining, Waag one piece grille guard and wheel to wheel nerf bars, 3M Xpel on headlights, front corner lights, and foglights, Valentine One radar detector, XM Satellite radio, Navigon 7100 GPS, Lightforce 240 Blitz aux lights, Aux. reverse lights.
AEM Brute force intake, courtesy of AEM Power and TundraSolutions.com
Teamwest Coilovers, Camburg Upper A arms, Daystar Steering Rack Bushings, Total Chaos Diff Drop spacer, JBA Headers, Y-Pipe, and EVOL exhaust.
Thanks for giving me something to go on. This weekend looks like a good one for it. As soon as I get a new gasket and some fresh carb cleaner, I'm on it.
ya dont need a new gasket, just clean it really well with the tb cleaner (anybody know if carb cleaner and tb cleaner are the same stuff?). my favorite method is a toothbrush and some paper towels. ive noticed if i take off the air intake at the tb every oil change and squirt some tb cleaner down there, i can wipe the butterfly and the tb clean with a paper towel, no toothbrush required...a lot easier than digging around every 30k, or maybe i just like messing with the truck
avlube.com sells this stuff called primrose injector perfector...dump a bottle down the hatch and then fill the tank to mix it up real good. it's about 30 bucks for 6, good stuff.
also, it might not be a bad idea to change the pcv valve, it's really, really easy too (under a minute, slightly longer if you clean the foam tubing ). all that goo on the tb comes thru the pcv valve, and the valve costs about 3 bucks or so at the dealership or autozone, so its cheapo preventative maintenance. plugs are a cinch to check on this truck too, worn plugs will cause a rough idle as well.
As a matter of fact I was going to replace the PCV vavle. I had bought one from Autozone a couple of weeks ago. Bought it home and it was SO cheaply made and it let air through! the old was was just fine compared to it. So I left it alone.
I'll check the plugs for crud and gap this weekend too. It'll be the first time I've taken then out for a look in 13,000 miles.
Rhino Lining, Waag one piece grille guard and wheel to wheel nerf bars, 3M Xpel on headlights, front corner lights, and foglights, Valentine One radar detector, XM Satellite radio, Navigon 7100 GPS, Lightforce 240 Blitz aux lights, Aux. reverse lights.
AEM Brute force intake, courtesy of AEM Power and TundraSolutions.com
Teamwest Coilovers, Camburg Upper A arms, Daystar Steering Rack Bushings, Total Chaos Diff Drop spacer, JBA Headers, Y-Pipe, and EVOL exhaust.
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Hesitation/stumble
and some paper towels. ive noticed if i take off the air intake at the tb every oil change and squirt some tb cleaner down there, i can wipe the butterfly and the tb clean with a paper towel, no toothbrush required...a lot easier than digging around every 30k, or maybe i just like messing with the truck 
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