I have a 1989 Dodge B250...it has overdrive
Yes
It is inside the distributor.
On my 92 B250, the voltage regulator is integrated right into the alternator. The engine computer is the voltage regulator on a 1989 Dodge Ram Van.
adjust the timing or use better grade/octane of fuel or both
A Dodge B250 Van does not have a mass airflow sensor.
Guess that all depends on what's wrong with it. Try re-asking your question.
There's two tabs by the housing you pull up on to release them
Have you replaced the thermostat? On my 92' B250 I had to remove the Alternator and I think the A/C compressor. to properly remove and clean the housing. Also just recently I had to replace the radiator cap.
Dodge full size van b series B150,B250 all are rear wheel drive with 3 engines v6, 318,360
No.
Through that tiny little dipstick tube. Get a flexible funnel.