1993 Chevrolet Cavalier Cooling fan problem

Hey there:

Yes the cooling sensor is the one on the drivers side front quarter panel. I found it odd when I bought the new one, it only had 4 prongs and the original stock unit has 5. Though auto zone does show the 4 prong as the right one when you look up the part. Now as far as temp, I just go by the temp gauge but I'll guarantee you when the gauge shows it getting warm, it is.

Hey there:

I'll take a look tonight. I did look to see if the stock (old one I kept) had 4 or 5 prongs and it only has 4. I was mistaken, autozone sells 5 prong of which I bought. I have no idea as to why the replacement has 5 and not 4. Also I noticed the old/stock unit has GM ABS V1 on it, does this relay also control the ABC System or is the numbers just a part number. I REALLY appreciate your help and if you guys can get me through this (the final glitch of the car) there will be yet another donation.

Thank you !

Good morning:

The coolant temp sensor has been replaced, it has a three wire sensor as you said. I put the old coolant fan relay back on yesterday and the fan still does not come on (probably why I had bought a new one and replaced). ALL the parts were replaced, the temp sensor (which the mechanic had told me the reason the fan originally wouldn't come on was the reason), has been replaced twice, once by them and again by me. In will check but I think the wires going into the connector only has 2 wires. The fan worked right up until I took the car into Discount tire and had the tires, struts, brakes, etc replaced AND the mechanic there said they could replace the radiator and fuel injectors (2 were leaking and radiator was shot from sitting so long) also. I was VERY skeptical to let a tire shop do this but went ahead. That's when the fan wouldn't come on (I sat there 8 hours not knowing what the hell). Then I was told "we got the fan to come on by changing the TEMP SENSOR and yes it did, 40 degrees hotter then it used to come on, going by the temp gauge. And again, now it won't come on at all. Last gig on this beautiful car and it's driving me nuts ! In the day I've built many a "hot rod" motor, I have an off road race team with a Trophy truck and numerous motorcycles we race, I ain't no dummy. BUT. When it comes to the newer stuff and me getting a bit lazy, I take my car in for any repairs, just don't have the iggy you guys do. I just went out and checked, 3 wires to the sensor, green, yellow and black. The go into a massive wire loom/harness and the 2 wires to the fan, bigger gauge wire, purple and black. You guys are good, I'll throw another $100 smackers in a donation if we get through this.

Let me know how to proceed and muchos,

Ron

Yes sir, I've done that and it comes on, just like I THINK it's supposed to do?

Yes I have a OBD1 tester and No, Infrared tester. There are NO CODES coming up, nothing. Nest idea?

Good morning:
I sure hope this doesn't go to your cell phone and if it does, wakes you. Getting ready to head to a race at Glen Helen thus up early on a Sunday and your reply. No I don't think the scan meter work as you ask, it just tell you what ever code may have come up. I'll see if I can locate a infrared tester and give that a try. AGAIN, keep the info coming and thank you ! We will conquer this matter ! If the temp gun shows what the dash gauge shows and the fan still is not coming on, then what? Just asking so you will be prepared.

Ron

I'm tempted to take the car to the gentleman that builds the engines for the race truck but he's in Barstow and he's already "donated" so much time in the truck that I really don't feel comfortable. Thus the reason I've been paying mechanic's (mobile ones also) plus by paying some of these peeps, I'm helping them out also. I've never been one to ask for anything free and always the one to give more than expected. But I will see if I can locate a infrared temp gun and try to get this done with your help.

Thanks again,

Ron

Good morning:

I live in Yucca Valley, just north of Palm Springs. The scanner I have is the type that only reads and gives results to codes, it doesn't have the ability to
actually read anything and the "check engine" light doesn't come on thus no codes to read.

I just can't figure why the temp gauge would just "all of a sudden" start reading incorrectly, just doesn't make sense. But you are the brains behind this dilemma, not me.