โFeb-24-2014 09:17 AM
โMar-13-2014 02:42 PM
โMar-13-2014 01:53 PM
trpwire wrote:Are you saying the the Aux fan was blocking air flow when it was engaged and spinning ? or disengaged?
Had exactly the same problem with my 454 Dolphin.
Temp gun revealed fan clutch was not engaging until 250 degrees, replaced with NAPA part to yield maginal cooling. Removed the Aux fan and voila, perfect temps. Aux fan was blocking good air flow.
Wally C.Flyfisherman128 wrote:
I know this has been discussed to death but here goes. '92 Winnie 454 overheats. I did all the things suggested right up to replacing the radiator i.e. replaced the fan clutch, changed the thermostat, flushed the radiator, cleaned the radiator, replaced the aux fan. I am at that point. I am tired of watching my temp gauge running on the edge of red. I am about to replace the radiator. My question is..radiator shop rebuild or DIY replacement? I have the tools, skills and garage to do it myself. I only want to do this once, I want to do it right. I haven't brought it to a radiator shop to see what that will cost verses ordering up a new one.
โMar-13-2014 04:29 AM
Flyfisherman128 wrote:
I know this has been discussed to death but here goes. '92 Winnie 454 overheats. I did all the things suggested right up to replacing the radiator i.e. replaced the fan clutch, changed the thermostat, flushed the radiator, cleaned the radiator, replaced the aux fan. I am at that point. I am tired of watching my temp gauge running on the edge of red. I am about to replace the radiator. My question is..radiator shop rebuild or DIY replacement? I have the tools, skills and garage to do it myself. I only want to do this once, I want to do it right. I haven't brought it to a radiator shop to see what that will cost verses ordering up a new one.
โMar-08-2014 06:34 AM
โMar-08-2014 06:23 AM
โMar-08-2014 06:10 AM
Dachristianman wrote:I made a tool to clean the fins without taking the condenser off. I took 1/4 plastic tubing and drilled 1/8 holes in the end of the tubing radially around the dia. I plugged the end with a screw and put a std garden hose on the other end. The hose is about 3 feet long and can reach between the radiator and AC condenser to clean bugs and other debris from the fins. I was surprised at the buildup of stuff in between.
My 92 Brave 454 had some overheating issues, and I went ahead and pulled the radiator. (As a note, it can be done without draining the A/C condensor). Anyhow, mine was caused by plugged fins, but since I had it out, a radiator shop flow-tested and pressure tested it. He ran it up to about 25 PSI just to see if it had any weak areas. It held the pressure. It wasn't flowing at 100%, but he did get it flowing better by using pressure and who knows what else. He didn't have to crack it open, and I didn't want to spend the $450 to have it recored. I'm back in business and no overheating. In fact, my clutch fan hardly kicks in any longer.
$50 and a day's work well spent.
Tom
โMar-07-2014 08:03 AM
โMar-05-2014 05:21 PM
noleakman wrote:
I have had a Radiator shop for 25 years and my opinion would be first I dought you could get a new radiator for that old of vehicle and factory fan clutch is so much better but most people don't want to pay the price any orignal radiator is junk at that age weather you flush it or what ever! Flushing does nothing except changing old coolant with new! If you Rod out a radiator you know it is cleaned but old radiators just dont take a rod out with out alot of patching and repairs! Get new core from a good shop!
โMar-02-2014 03:38 AM
noleakman wrote:
I have had a Radiator shop for 25 years and my opinion would be first I dought you could get a new radiator for that old of vehicle and factory fan clutch is so much better but most people don't want to pay the price any orignal radiator is junk at that age weather you flush it or what ever! Flushing does nothing except changing old coolant with new! If you Rod out a radiator you know it is cleaned but old radiators just dont take a rod out with out alot of patching and repairs! Get new core from a good shop!
โMar-01-2014 01:50 PM
โMar-01-2014 02:14 AM
โFeb-28-2014 07:49 PM
Flyfisherman128 wrote:
funny that you say the motor sputters when this happens maybe the motor is running to lean lean motors have higher combustion temp. does the motor idle fast if it does you may have vacuum leak low fuel pressure can make it run lean bad o2 sensor can make it run lean
My guess with the back fire is the fuel gets so hot that it vaporizes and pre ignites in the combustion chamber. The back fire is out of the throttle body. I believe that in a carbureted engine the fuel line pressure is 7 psi, in a throttle body is around 18 psi and in a fuel injected engine its around 60 psi. In the old days of carbs we used to get vapor lock. This sort of acts like that. I would have thought that with the higher pressures it couldn't be that. All of the fuel lines are away from hot surfaces and are well insulated.
โFeb-28-2014 05:06 PM
โFeb-28-2014 11:57 AM