At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
98 caravan started overheating. Replace radiator, therm, fan relay, temp sensor. The engine was still running hot. I think I got the lines correct for the trans cooler lines. Bottom right to top left and top left to bottom right. It sounds ridiculous like how is the coolant going to flow if its going back to itself
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Could be.. is the system FULL? Air in it can cause some odd things. When engine and coolant are COLD (as in after sitting over night), open the radiator cap. Top off the overflow res with a 50/50 antifreeze / water mixture to HOT mark. Start engine, turn heat to hot and fan to high. Top off RADIATOR with same 50/50 mixture slowly & gradually. As the coolant circulates, it should bring any AIR trapped in the system (from heater core & engine block) to the radiator where you can replace it with the 50/50 mix. Once the coolant is HOT and stays level - about an inch under the opening, close the radiator. Monitor the overflow res and add as needed. Good luck!
a temp sensor only monitors what the engine temp is it will not cause the engine to overheat or run hot. check to make sure the rad cooling fan is working if not it could be a bad fan motor, temp sensor for the computer to turn on the fan or a fan relay. there are 2 temp sensors on motors. one is for the gage or light the other is to tell the computer to turn on the cooling fan.
Unplug the fan on sensor. It should have one green wire and one black wire. Use a paper clip and jump the two wires. Turn the key to the run position, the engine does not need to be running. Does the fan come on? If not check the green wire for 12 volts and the black wire for ground. If there is no ground than run a new ground wire. If the is no power check the heater/air conditioning fuse in the under dash fuse block. If there is power and ground make sure both the cooling fan fuses are good and both the cooling fan relays are good.
If the relay is getting too hot, the most common problem is a faulty radiator fan. The fan motor pulls current thru the relay. The radiator fan motor may be failing after it runs for a period of time.
No,it sounds like you have taken the correct steps here.these 3.1 engines run a little hot, the fans will not come on until the temp reachs over three quater the way on the gauge, they are also prone to a bad temp sender, this is located on the rear head near the trany, but if its overheating and you have bleed the system then theres a problem, when i say overheating i mean the gauge goes to hot and coolant boils over and out the resivior, if this is the case then the next thing would be to have a block test done, these engine are also known for headgasket problems, this is when exhaust enters the cooling system and stops the flow causing it to overheat, a quick test to see if the fans are operating correctly and the relay also is to start the engine and then disconnect the coolant temp sensor and fans should run, if the fans turn on then have the test done, this test is done by draining coolant down a little then theres a tube that holds the fluid that sits on radiator where the cap is and if exhaust is entering then the fluid will turn yellow and this means a head or gasket problem.good day.
The fans are actuated by coolant temp in the radiator. It is possible to have overheated coolant in the radiator, causing the steam, and your engine not overheating...the temp sensor for your engine is reflecting the engine temp, not the temp of the coolant in the radiator. You problem could be a bad temp sensor at the radiator...not allowing the fans to come on. Good Luck! I hope you find this to be very helpful!
The temperature sensor may be controlling the fan via a relay; these can fail by welding the contacts together remaining permanently 'on.'
Locate the fuse (and possibly relay) box, check inside the cover for a layout that identifies which fuse or relay controls the fan; they are often on their own fuse and definitely on their own relay.
×