Question about 2002 Toyota Tundra
Truck was running fine until a door was left open and dome light drained the battery. Jump started truck but it was running very rough and kept stalling. I replaced fuel filter and truck seemed to run fine. Next day same problem, rough starting, won't idle, and stalls. I checked pcv for vacuum and it seems to be fine. No check engine light, no battery light, and volt meter gauge working fine. Help!
Disconnect the battery and leave disconnected for a while before reconnecting. This will clear the computer values. Jump starting is bad for any vehicle. My 02 with 100k idles really smooth after replacing the battery recently, it was rough before disconnecting the battery. The computer is suppose to have learn mode so drive it for a while.
Posted on Jan 30, 2009
Same problem with my 02 tundra with 165,000 miles. Battery went dead and when I charged it back up, it would not idle or it idled too low. Took the advice from this thread and completely took the throttle body off of the truck.. A good tip if you are going to completely take the throttle body off: take pictures of it before you take anything apart so you know where everything goes. I unhooked the hose from the air filter box, then unhooked a few hoses, sensors, and throttle cable. Then I unbolted the throttle body from the motor (2 12mm nuts on top and 2 12mm bolts on bottom). After I got it completely off, I cleaned the carbon buildup off with carb cleaner, paper towels, and a brass brush.. If you are going to use a brash brush, spray the brush with carbon cleaner, and GENTLY scrub to break the carbon loose. Wipe the rest off with a rag. DO NOT BRUSH HARD!! After about 30 minutes of cleaning, I had it spotless. I put it back on and hooked the hoses, sensors, and throttle cable back up. When I cranked my truck up, it idled at 2000 rpm which was way too high.. I then reset the computer. In order to reset the computer, disconnect one of your battery cables and wait 5 minutes. I reconnected the cable and cranked my truck up.. Ran like a champ
Posted on Oct 02, 2012
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Posted on Jan 02, 2017
Check the voltage of battery with voltmeter.. It is sometimes possible that if voltage of battery drops and jump start is needed, your computer will only charge to the last voltage that was recognized which would be when jumped...Try and charge the battery if possible I would actually suggest that you have your battery tested at local auto parts store and if it is presumed in good condition ,let them charge for you to max capacity . If battery has been tested and labeled as no good replace if necessary... Oh, and first thing you should do is make sure your positive and negative battery connections are clean and tight...if this didnt fix problem please give more info on what was found when advice above was followed...Good Luck!!!!
Posted on Dec 28, 2008
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