Low rpm or osillating idle is a clogged vacuum input on the two hard lines on top of the throttle body. Grab a needle clammped in a pair of needle nose pliers to reach it, remove the intake hose and poke out the carbon on the inside top of the throttle body, then spray out with MAF cleaner.
Do one at a time and spray throttle body cleaner into the two vacuum ports on top of the throttle body. Go to your stealership and order lines there, its not too much and will last for 20 years. 3.5 and 5.5 again dont buy anything but toyota for this one.
They work great! Only thing is u may need to grind it down a bit, to activate the POWER! Button if u run it further back to easily access the front holder. See pic
I’m gonna go out in the limb and say its the water temp sender off the theromstat housing, the back wire tends to get real corroded. Make sure u replace with OEM or a used OEM that works. Aftermarket will give you these symptoms, at least my autozone one did, but it would go above the middle...
It only comes on when ur engine temp is super hot and u turn off the key. The reason is to prevent vapor lock in ur fuel line. How do i know this? Because I went thru the In & Out drive thru on a summer day, then shut off the 91 at the gas station next door, and whamo fan came on, then vapor...
Factory Service Manual (FSM)[/FONT]
For the FSM call Toyota Publications @ (800) 622-2033
How do you retrieve the codes?
It’s easier than you think. Follow the following steps to find out how your engine is running.
Initial Conditions:
Battery voltage 11 volts or more
Throttle valve fully...
Im gonna second that opinion on the vacuum leak. Probably the reason it went away after a wash. Mine used to do the same thing; rough idle / non steady rpm / smooth after 1500 rpms. My idle now sits at 650 and purrs. Pull all the hoses and replace one at a time with OEM. Also the 5mm ones too...
I know this is an older post. But I brought my IAT down to 75 from 120.
Outside air temp 70-85
Rises slightly when driving slower
I’m running in FZJ-80 with a snorkel and a ARB front bumper
Home insulation wrap and a 4”diameter heater duct that i cut up and fitted to scoop up cold air from...
Spray throttle body cleaner thru your two throttle body vacuum lines inputs to make the EGR operate properly. My check engine light used to come on at freeway speeds because the EGR wasn't opening up. Ifs it the fuseable links ur gonna have more electrical issues on the dash. Like no D light...
Change your fusable link, same issue with me. It wiggles when the engine wiggles. Do what i did put wife in driver seat, tell her to watch for light and not touch anything but shout when she sees the light come on. And you start wiggling wires around under the hood, you can waste more of her...
What
What do you mean by traphouse? The fact that the HG was replaced and surfaces possibly machined, creating issues later on???? And now its not worth as much? If you do the HG after it overheats is there an issue with cracking or warping? If u do the HG as preventive maintenance do u have...
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