Close
QUESTIONS

RepairPal is your advocate for car care advice and guidance

Q: Engine repeatedly overheats & cools down, over & over again while driving on 1990 Chevrolet 2500 Pickup

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
A few days ago I stopped at a store & when I started to drive again, I noticed that my engine was overheating. Just as I noticed it & was getting ready to pull off the road to stop I noticed the temp. was rapidly decreasing, so I continued to drive. This happened a couple times, so I thought it was only happening when I slowed down or stopped & started driving again, but then the next day I noticed it doing the same thing while continually driving around 55 MPH. What would cause it to rapidly over-heat & then rapidly cool down while driving a steady speed, over & over again? Would it more than likely be the water pump or possibly be something more serious, like a cracked head?
Btw, I havent noticed any fluid leaking anywhere either.
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
Had same problem with my 89 2500. Turned out to be a head gasket. Needs to be checked quick before antifreeze wipes out piston rings.
FIrst and foremost, check the radiator fluid level. A low level will cause that exact problem
Didn't find what you were looking for?