The dash light indicates low oil level (float sensor in oil pan). The oil gauge indicates oil pressure. If there is plenty of oil according to the dip stick you're probably fine and just need a new oil pressure sender (or wiring is bad somewhere).
Be sure to read the manual (or the FAQs on...
The idea that overfilling the engine oil increased the oil pressure and led to the runaway seems questionable. The oil pump on these is a positive displacement pump meaning it pumps a set volume of oil with every revolution - more oil in the pan isn't going to increase the oil flow rate, or the...
An HDJ81 is just an 80 series with a different engine and the steering wheel 3 feet farther to to the right. Its still a 25+ year old truck with a (generally) unknown maintenance history, same as most US spec 80's out there. If you expect the HDJ81 to be as refined and maintenance free as a new...
A few thoughts:
-Check vacuum hose routing to be sure everything is connected correctly
-EGR could be opening when cold and causing the idle issues, you can reroute the vac lines from the EGR to prevent it from opening as a test.
-Where did you get a Toyota VAF? I thought these were unobtanium...
The coolant lines to the rear heater run above the exhaust, the hard lines can rust out and the rubber connections can degrade. You can't even see the lines without dropping the exhaust so even checking on the lines is a PIA. The rear heater delete disconnects the rear heater lines from the rest...
Heres the Amazon link. Mud seems to default to substituting the pic instead of the actual link, the link is missing the first "h" to prevent the mud image.
ttps://smile.amazon.com/gp/product/B001PNG884/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
It shows 4 in stock currently, for USA at least.
The NTK 24080's will work for both sides. I bought two of these for my 94 a few months ago from Amazon. The 24080 doesn't include the plastic clip that secures the wire to the body on the outboard sensor but you can just use the clip from the old sensor.
For those who have replaced the transmission filter did it look like it needed to be replaced? I dropped the transmission pan on my 94 @ 150k miles to replace the filter
only to find the filter was completely clean. The magnets in the pan had some fine powder on them but not much.
20 minutes at 225F almost certainly didn't damage anything.
Heres a table from a study on DEXRON-III that was essentially torture tested. The table shows the lifespan on the fluid in hours for different loads at different temperatures. Using the 16.0 KJ loading, moving from 90C (194F - normal...