Bringing my 02 Prerunner up to speed

hey guys new to the forum and i've had my double cab prerunner about 6 months now. just got into the maintenance because i'm not sure what the previous owner did. So far i've put in a cold air intake, done a full synthetic oil change, replaced the head gaskets, full timing belt service, all new belts, changed the diff flui, replaced spark plugs, and put in new spark plug wires. what's some more maintenance you would recommend? i was thinking of changing the tranny fluid and doing a coolant flush. anything else come to mind? any and all help is appreciated

 

Everyone told me not to completely flush mine, just add if needed. I guess the new fluid would break down the seals and things would start leaking. And I would clean the maf, was getting 18 on a 2.7 now im getting 20-21 mpg.

 

Depends on how your transmission fluid looks. If its redish pink like it should, you can go ahead and do it. However if it is like mine, which is brown to almost black, DO NOT change it. The transmission is used to that chunky old fluid and putting new slippery fluid will cause it to start slipping and sometimes not even work at all. My previous owner didn't do anything but oil changes. And with 187k miles, I'm surprised the transmission has lasted this long. Coolant flush would be a good thing to do. Give the MAF sensor, throttle body, and IAC valve a nice cleaning and you should be good to go.

 

Hey thanks for the response guys i appreciate it. I didn't do a full transmission flush due to the mileage and not knowing what the owner had done. The fluid was a little burnt so I just decided to drop the pan and change the filter. Only ended up being 5 quarts. I'll have to look for the cleaning MAF sensor, IAC and throttle body threads considering I have no idea how to hahaha. Thanks again

 

It's pretty simple. Unbolt, use spray cleaner, let air dry, and reinstall. With the throttle body, you can get a shop towel and wipe in make sure to get any deposits that are tough to get off. Clean both in front and behind the valve.