Question about 1994 Oldsmobile Achieva Special Edition

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Why is my 94 achiva overheating? Some times it wont start

My 94 achieva will not start? It will on occasion. Also I have a low coolant light is on will not shut off even after iv added coolant the temperature gauge moves up to 220 real fast.There is not any obvious water leaks or coolant coming from the radiator. This car the radiator cap is located on the overflow tank not on the radiator.. When I look in the overflow tank it appears to be empty. . Battery is good, starter, alternator have been check tasted good. I replaced the starter module still nothing. I drove the car for 5000 miles or so with a bad motor mount I still need to replace that. I have had coolant issues for 3 years I took it to a shop to have the water pump replaced less then 20,000 mile ago ended up replacing most of the cooling system new radiator cap, hoses, thermostat, timing chain adjustor. within 3 months the low coolant light was back on. you can hear the water running inside the car. never did stop. how do i fix this problem on my 1994 olds. achiava 2.3 l engine with dohc. I haven't been able to locate where the temperature sensor is located or any other sensors. THIS SINGLE LADY NEEDS SOME HELP !

Posted by Anonymous on


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  • 2 Answers

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Posted on Jan 02, 2017


SOURCE: overheating

Not too sure I ended up taking to the shop. They are going to change the thermostat for the second time and if that doesn't work they are thinking blown head gaskets.

Posted on Jul 20, 2008

  • 3854 Answers

SOURCE: My 1999 Oldsmobile Cutlass V6 is running way hot.

Make sure the antifreeze is a 50/50 mix and you may want to replace the temperature sensor. The temperature sensor is on the manifold just in front of the thermostat housing and make sure there is no air in the cooling system. Idle the car and place the heater on high to cycle the coolant through the entire system, with the radiator cap on the first click letting any fluid expansion to follow in to the over flow tank and when the engine cools. The radiator will pull the coolant from the over flow tank, once all the coolant has been cycled and no air in the system. Tighten the radiator cap to the second click and that should help you burp the coolant system. As for the temperature running hot could be a faulty sensor, so replace it and it not that expensive and take under 15 min to replace. Good luck friend. 

Posted on Jul 15, 2009

  • 103 Answers

SOURCE: 1999 Oldsmobile Cutlass V6 Overheating Problem

Head gasket ? Internal leak ???

Posted on Jul 27, 2009

  • 6927 Answers

SOURCE: cooling system purge info

The biggist problem is most likely the cooling system needs bleeding to purge the air out of the cooling system.To do this,the easy way,is to start this with the car cold.Remove the reservoir cap and fill it full,past the full mark.Wait to see if the coolant level drops.Then refill to the top.Replace the cap,and start the engine,and let it run up to about 218 to 220,and shut the engine off(do not turn ac on,make sure it is off).Wait about 45 minutes,and look at the reservoir level,it should have dropped.If so refill the reservoir,and repeat these steps until the cooling fans come on at about 215 or so,and they go back off by themselves.Keep check on the reservoir for a day or so to make sure that the reservoir does not drop to low,the level will finally set.If I can help,let me know.>>>

Posted on Sep 24, 2009

Testimonial: "thanks for your help! two brass screws 7mm the location of bleeders do you have any idea"

  • 189 Answers

SOURCE: overheating fan will not run ! I change cooling

there isa short in the wiring somewhere,which a shop can check for you,or check your thermostat. after 20 years i still have to make sure tat i dont install it upside down. which is easy to do if your in a hurry. my bet is that the wiring going to the coolant sensor has a bare spot and grounding somewhere.

Posted on May 02, 2010

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