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Well the gauge that is not showing the right level is the one that needs to be attended to like for instance the oil pressure gauge shows like 20 to 30 lbs of pressure at Idle if for some reason the pressure falls below the set pressure the computer turns on the check gauges light! You need to check all the gauges because really and truly a faulty gauge is never the culprit for the light to come on you might have a low engine oil pressure the voltage might be above 14 volts or below it, the water temp might be gettng too high! It's kinda hard to tell what it is without looking at them! Hope this shines a little light on your dilemma! Goodluck!
Okay before I get ahead of myself is it 2wd or 4wd either way your hub should be a sealed hub meaning it bolts to the knuckle and the rotor should be floating on the hub it should only have two clips holding the rotor to the hub which was only used for original assembly to keep the rotors from falling off while going down the assembly line! If it is 4wd does it have manual locking hubs or automatic locking hubs? If so you will have to disassemble the locking hub then remove the retaining nuts from the bearing then the rotor should come right off! Toyotas must be good vehicles because it has been awhile since I have worked on the brake rotor on one! Hope this helps you out! Goodluck!
It sounds to me either a weight came off of a wheel or bent rim it could possibly be a bearing on one of the hubs jack the car up and try to (wiggle) each wheel to check for play! But more than likely you just need to get your wheels balanced! I have had a weight come off before it happens from time to time! Good luck hopefully it's just a wheel weight!
Not trying to sound like a smartalic but what I do is get a repair manual you can go to the local Library and make copies of what they have if they don't have it your parts store can order it for you! If they don't have a manual available I would bag and tag the bolts and parts you remove and make a list of what came off and when! If you need a little more details you can cotact me on here! I'll help as much as possible! Good luck!
The oxygen sensor can cause the engine to change the timing making the engine have lower fuel mileage o2 sensors can still be working just not properly! It is the cheapest route to take before you go any further and hey worst case scenerio you have a new o2 sensor in the event that the original fails to work!
The dash in the 94 is digital, but analog in the 91 I was only wondering if it would connect to the sensors and work as if it had in the donor car or do I need to change the sensors out aswell the engine shows to be the same and the transmission is the same it should work right?