I suppose it could be a couple of things. But my guess is your fuel to air ratio. Either too much air and not enough fuel which is too lean. Or too much fuel and not enough air in which case your mixture is too rich. Either way, the fuel/air mixture in the cylinders is not burning correctly and thus the engine is not creating enough power. Needless to say I would check your carburetur or your fuel injection system. Something could be clogged, or if you have modified any parts of the intake or exhaust you may need to retune your carburetor.
The cause of high engine idle and surges in the 1989 Corvette is due to..Read More
Engine. Surges. Stutters. Loses power. Hesitates. When you. Apply. The throttle are signs of a plugged. Fuel filter
maf sensor
check your egr valve or throttle positioning sensor
This is a dangerous condition that can or will result in a collision/loss of control. There are multiple causes which include an evaporative emissions component failure and idle air control motor. These problems are indicated by the engine racing inexplicably.
A bad throttle sensor can cause several problems. Symptoms include rough idle, loss of power, and even power surges while driving. .
If a 1997 Ford Aerostar surges when low cruising the throttle body may need to be cleaned. There could also be a lose hose or one that needs repairing.
Storm surges are caused primarily by high winds pushing on the ocean's surface Powerful wind whips up large, strong waves in the direction of its movement.
Overload - excess voltage causes excess current, and the combination causes excess power dissipation, leading to overheating. If the varistor was included to help dampen voltage surges, then a very "dirty" supply. with large numbers of surges, can lead to overheating.
What About the sensor? If it's broken? Not working right? If your truck surges up and down when you are pressing the gas pedal then it might need changing.
2001 missan altima emgine runs stall at a traffic light but engine does not cut off.
Wires from distributor can age and loose conductivity, especially under high voltage of full-thottle acceleration.