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Car Forum / Honda Cars / February 200893 civic overheating..HELP!
i own a 93 civic lx with 198,000 miles on it. just recently i have been having problems with it overheating. Just last year I had to replace the head gasket and the cylinder head. However, now it is beginning to overheat again. My fans are not turning on, but i did jump the wire to test the fan itself and it does work. today i replaced the coolant temperature sensor and when i cranked the car, the engine light came on. I decided to let the car idle for about half an hour and it never overheated nor did the fan turn on. however, right about half an hour it started running like crap again to the point that it almost felt like it was goin to shut off. i push the accelerator and i get the white smoke, so i know that is the head gasket. as for the engine code, it was a code 6, which is the coolant temp sensor! why is this? and why isn't the fan turning on at all? thanks for your help >i own a 93 civic lx with 198,000 miles on it. just >recently i have [quoted text clipped - 22 lines] > temp sensor! why is this? and why isn't the fan turning > on at all? Believe your indications. The most prominent is that you have white smoke coming out the exhaust. With everything else, the first thing to investigate is whether the head gasket repair was done properly. The next thing that comes to my mind is whether the mating surface for the gasket was milled to flatness again. When the engine overheats, this surface can warp. Who did the work? Did they say they had the head surfaces milled? On the fan not going on, my guess is a different sensor activates the fan. > <rickylow...@gmail.com> wrote > [quoted text clipped - 38 lines] > On the fan not going on, my guess is a different sensor > activates the fan. Actually me and my dad did the work with the gasket and new head. I have had nothing but cooling problems with this car since a got it in 2002 at 135,000 miles. It has been a constant battle. I know that usually if the thermostat is closed shut the fans will not turn on. I am going to check that after the rain quits. I can deal with doing another head gasket this weekend but until then i need to find out what is going on with the fan. I have had this problem before but it was the fuse under the dash that was blown, it's a different problem this time. thanks Little caveat on getting the fan to turn on: Even with everything working, 40+ minutes in winter temperatures may be required before the appropriate sensor gets hot enough to turn the fan on. I base this on numerous coolant changes (accompanied by air purges, which require the fan coming on twice). I trust you are hearing me re the possible flawed head gasket job: The metal surfaces to which the gasket adheres need to be checked for flatness. I would not monkey with the fan at this point until I was sure the head gasket was not blown again. Steam (white smoke) in the exhaust, along with signs of either coolant loss, oil in the coolant or vice versa, means the gasket is blown. > On Feb 12, 1:55 pm, "Elle" > <honda.lion...@nospam.earthlink.net> wrote: [quoted text clipped - 71 lines] > different problem > this time. oh yeah i definitely hear you on the head gasket issue and the white smoke, event though it only gives smoke when i'm idling or sitting at a light. I'll try to have that taken care of this weekend because there is no doubt in my mind that that has become the bigger issue here. As far as the fan goes, I have pretty much narrowed it down to the thermosensor on my thermostat housing. I jump those wires and the fans began to run, which tells me the sensor is probably bad so I will have that installed by nightfall. Its been a wonderful rainy day in Tallahassee and I've been stuck outside working in it. Thanks for all your help! To be a tad more complete, the factory service manuals (free online) at http://www.honda.co.uk/car/owner/workshop.html are pretty good for troubleshooting the cooling system and sensors. For the 93 Civic, try especially the 95 Civic manual, the 90-94 Concerto manual and the 89-91 CRX manual. Check back, some others will undoubtedly post with good counsel. Good luck! wow, great website. thanks. I can cross reference that with my Hayne's manual. Just bought a new cooling fan switch that fits on the thermostat housing. I plan on taking care of the head gasket deal this weekend. thanks again for all your help just an update....me and my dad have pretty much decided that i should try to find a used or rebuilt engine. i may have a cracked block and to avoid dealing with this situation continuously(which this same exact thing happened this same time last year), we are just going to replace the whole thing. if anyone has any places in mind that i can get a really good deal on a used or rebuilt engine please let me know...but keep in mind, i am a college student..however, i know i'm lookin at around 900 dollars or so. i'll start calling the junkyards now.... Search the net using words like {Honda engine used}. This comes up now and then, and I have read on the net about used Japanese engines being available. It's definitely worth exploring. Check for the warranty. I think you should find a low mileage one for $900 or possibly quite a bit less. Your local import shop may also have a good connection for a used engine. An update is welcome. Lots of folks asking about this these days. > just an update....me and my dad have pretty much decided > that i should [quoted text clipped - 13 lines] > the junkyards > now.... |
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