20 Most Recent 1992 Toyota Pickup - Page 8 Questions & Answers

It would be a very small amount. Ohms equals resistance to current passage. What you are looking for in the switch is continuity between certain terminals when switch is moved through all positions. Sorry I don't have the necessary diagram. Check a repair manual for your toyota. There are only 4 positions: off, on or run, accessories, and start. You have a hot wire coming into the switch, and routed out another way by the switch's position, now the run position would have to connect with both run and accessories-...I know I'd have to have a diagram, too many fuzz balls in my head!

Looks like you got spark, and gas in the throttle body made it fire: nice work. Sounds like your fuel pump is out or the wiring is not turning it on. One way to be sure is to set a spare battery near the tank and hot wire the pump with jumper wires. Or if you have a voltmeter check for voltage at the fuel pump connector while the truck is cranking.. If the pump is working and getting gas to the engine, see if the injectors are pulsing. A good idea to check fuel pressure if the pump is working.

You don't need to overheat to blow a head gasket.One other test you can do is remove the radiator cap and run the engine. There is likely to be lots of bubbles and perhaps even spouting of water out of the radiator if the head gasket has blown.It certainly sounds like you have this issue.By the way, you will use up all the coolant and damage the engine if you continue to run it with a blown gasket.

inline fuse may be the problem. pull the radio out and check for power

most brake and battery light circuits are connected.start with an alternator check.

Generally speaking code 21 for Toyota is a problem with the O2 sensor circuit. It could be the sensor or the wiring back to the computer.

i have 92 toyota pickup with 4cyl running 36's with 5.29 gears pulls them just fine

Have the alternator tested, if you bought it from a discount auto parts store like Autozone or Oriley it may be defective, I have seen three of these in a row be no good.

Check the fuel pump relay.

Have you checked you brake booster?

running hot cause, cooling fan bad, water pump bad , or thermostate bad

check fuel presure but it is not a likely culprit likely the throtle position sensor has a bad spot in it
it is likely thet the vechale seams to act up at arround the same rpm or near same rpm every time