Ok, I dont know what else to fix. New evap system, new plenum, new coolant temp sensors, new pcv, new breather filter, new air filter, clean intake, still My truck runs funny. The transmission waits to shift, sometimes it idles out in a drive through, and even though it has gotten better with the repairs i've made, the gas mileage has suffered. I've done everything I know to do and more, and still it runs poorly. Any suggestions of where to look next? Just checked tranny fluid, it looks deliciously perfect and red. Think its probably a fuel system as opposed to a tranny issue, but I just dont know anymore.

 

Can you be a little more descriptive than that?

Late shifts, if that's what you're referring to, can be something as simple as adjusting the TV cable.

 

I reckon it could be called a late shift. When I start sometimes it will take a second to shift into first, so it will rev up real high and then jerk when I start. Occasionally when im stopped at a drive through it will just idle out.

 

Did you changed the transmission selenoid? I had a problem like that on my Dak and the dealer changed the transmission selenoid and problem solved!


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I'd try the TPS on the Throttle body first. It's cheaper and causes tranny shifting issues sometimes.

 

Oops... that's a more significant problem than just a TV cable adjustment. Unless your engine idle speed is ridiculously low, you're losing line pressure in the transmission which is allowing the clutches to release. No bueno.

The hot ticket would be to get the truck to an honest transmission shop for diagnosis. Around here, a straight diagnosis with no extensive tear-down runs in the neighborhood of $100-$150. It's usually cheaper than just shotgunning parts hoping for a miracle cure.

 

bah humbug, thats not the answer I wanted >.< Oh well, I appreciate the help. I will check the check the TPS, it would make sense that it could be defunct since the problems started after my charcoal canister went. something in the fuel delivery or vacuum systems seem the most likely culprits. If that seems ok, Ill take it to a shop.

 

In my town the diagnosis is free. They take it for a test drive and hook up their scan tool to read the sensors/pressure in the transmission, all in the hopes that if there is a problem that you'll have them fix it.

 

That'd be a good thing. Where I live, things that are advertised as free never are. Free breakfast! (If you buy a car for more than $20,000). Free text messaging! (On all plans > $120/month). And so on.

Either way, an accurate diagnosis is always better than by guess and by golly.

 

well, I don't trust any of these mo fos around Atlanta, and the one that I do trust is wicked pricey. Mechanic is last resort.