Clean the MAF sensor with CRC MAF cleaner, do not touch the sensor wires, you'll damage the unit and freah is ~ $175.00
In a 1990 Ford Aerostar : You either have the 3.0 liter V6 engine or the 4.0 liter V6 engine from the factory ( each size of engine has 6 engine cylinders )
how do I remove a water pump on a 1990 4.5 liter cadillac engine
A 1990-1996 has a 3.0L V6
The 1990 Jeep Wrangler came with two engine options: a 2.5-liter 4-cylinder and a 4.2-liter inline-6 engine.
counterclockwise
1.6 Liter Straight 4
Yes. You will need to mount the engine 60degrees, however.
The 4 cylinder is ( 2.0 liter ) The V6 is ( 2.5 liter )
The engine choices in the full size Ford Bronco for 1990 were the 4.9 liter straight six cylinder , or the 5.0 liter V8 , or the 5.8 liter V8 engines
The 1990 Ford Ranger 3.0 liter V6 engine has a distributor , the 2.3 liter - 4 cylinder and the 4.0 liter V6 have EDIS ( Electronic Distributorless Ignition System )
The 1990 Isuzu 2.8 liter engine MAF sensor can be found on the firewall in the engine compartment. The sensor will be on the passenger side of the firewall.
Any number of things could cause your vehicle to surge. You need to take your vehicle to a tune-up shop and have it diagnosed.