Your 1987 Astro might go full throttle when the engine is started because the throttle is sticking. This could also be a problem with the starter or the ignition hanging during the start.
4.3 engine - front of motor above water pump
The 1987 Chevrolet S10 with a 2.8L engine is throttle body fuel injected.
There is a oil sight low on the engine on the throttle side
That is the big item on the top of the engine in the middle. The air cleaner sets on the top of it. But in 1987 GM started installing electronic fuel injection on all their full size Chevrolet trucks. The unit on top of an engine in a 1987 Chevrolet full size truck is called a throttle body.
need more info, engine-details- have you checked vacuum with gauge? etc.
At idle, more than 25 is acceptable. Full throttle, over 75.
It is on the side of the throttle body opposite the throttle cable.
You need a 350 TBI/Throttle body injection engine. This is the years you need to look for and they will ALL interchange. 1987 to 1995.
Front a/c 1.02 kg (2 lbs .4Oz)
The throttle position sensor is on the throttle body.
figuratively yes but unadvisable
Misfire is usually caused by faulty spark plug wires or spark plugs or both. I don't see the throttle body causing misfire.