My 93 does the same. Once it is hot it will get up to 3k and bog down. If I don't let up on the accelerator it will backfire and take off. The low coolant light came on briefly, but the radiator is full. The temp reads really low. Thought it might be an open thermostat, but I have good heat.
sounds like it could be the timing when it's under a load.
32---35 psi idle +8psi under load
The P51 mustang has Six .50 caliber machine guns and a external bomb load of 2,000 lbs
No, a bad EGR valve would cause pinging at driving speeds or stalling at idle. Have you checked the distributor cap? Fuel filter?
When under a load the errors will be shown faster
If only under load then......spark plug leads.
new fuel filter, Dist. cap/rotor, new plugs and plug wires have solved the problem.
sounds like a cranksenser.it will put your timing out when your under load .markstang
Yes, the cross member is under the load on a 1989 Chevy van.
Why power generated with under frequency is harmful to the load?Read more: Why_power_generated_with_under_frequency_is_harmful_to_the_load
It could be from the wrong grade of fuel if it does it when it's under load, timing off,wrong plugs, or carbon buildup.
If it is a 4x4, for both the front and rear you can simply unbolt them and put new ones in, they are not under load because the springs support the weight of the vehicle.