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1990 4.0 auto random cutout


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What will cause the motor to randomly feel like it stopped? While driving down the road (maintaining same speed) it seems like the motor stops for 1/2 to 1 second and then resumes. Sometimes it is repetitive and if I press the accelerator down it runs normal. Could it be a loose ground, auto idle control, tps?

 

 

 

Just bought it as a fillin while repairing the 88 I have.

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I pulled the IAC motor and cleaned it. I also found the stud holding the dipstick was loose but the nut holding the ground wires was tight. I removed the ground wires and then the stud and cleaned all the oil off of them. I then tightened the stud and reinstalled the wires. I have not tried it yet.

 

 

Over the last few years the PO has had a few thousand dollars of repair done to it. Head gasket, rebuilt dana 35 rearend, reman starter, front axle joints and seals, new radiator and water pump to name a few. Too bad the body isn't that great.

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