HELP!!! Need Expert Diagnosis! OVERHEATING!!!
#1
Join Date: Jul 2003
Location: Brunswick,Maine
Posts: 92
Likes: 0
Received 0 Likes
on
0 Posts
HELP!!! Need Expert Diagnosis! OVERHEATING!!!
AAAARRRGGGHHH!!!
I am in the middle of a mess with my MCS. It has 94K miles, and has thus far been bulletproof (literally stopped a bullet when someone tried to carjack me in AZ) then all of a sudden I start to overheat! Thought it was air in the system, bled the system, no change. . Found a T-connector that was broken and leaking coolant. Replaced, no change. Took it to the shop, they said Water Pump and Thermostat. Replaced those last weekend, still overheats. I am confounded and frazzled, any ideas are most welcome. Thank you for your time.
I am in the middle of a mess with my MCS. It has 94K miles, and has thus far been bulletproof (literally stopped a bullet when someone tried to carjack me in AZ) then all of a sudden I start to overheat! Thought it was air in the system, bled the system, no change. . Found a T-connector that was broken and leaking coolant. Replaced, no change. Took it to the shop, they said Water Pump and Thermostat. Replaced those last weekend, still overheats. I am confounded and frazzled, any ideas are most welcome. Thank you for your time.
#2
#4
Join Date: Jul 2003
Location: Brunswick,Maine
Posts: 92
Likes: 0
Received 0 Likes
on
0 Posts
thanks for the response
the cooling fan is working, both stages, checked the fuses.
No abnormal noises.
I replaced the water pump, and before i married the shafts together, i made sure they spun. Bad thermostat? bad seal on replaced thermostat? clogged or blocked hoses? Got pressure in the coolant system, bled OK, but no heat from A/C, and temp guage spikes after 5-8minutes of idling, with or without the A/C on.
I am stymied, I try and turn my own wrench, but I cannot figure this one out.
Thank you for the help.
No abnormal noises.
I replaced the water pump, and before i married the shafts together, i made sure they spun. Bad thermostat? bad seal on replaced thermostat? clogged or blocked hoses? Got pressure in the coolant system, bled OK, but no heat from A/C, and temp guage spikes after 5-8minutes of idling, with or without the A/C on.
I am stymied, I try and turn my own wrench, but I cannot figure this one out.
Thank you for the help.
#6
#7
hey i know you said you checked the shafts on the supercharger and water pump and they were turning, but did you by any chance pull on the sc shaft. meaning away from the sc?
only because i had a car overheating and i checked all i could think of and it turned out to be bad gears inside the sc; the teeth were damage on the center of both gears so that they would lock during the first spins but then work there way to the spot where both sets of theeth were gone and the pump would stop turning. (i know kinda hard to picture...)
by any chance have you done a compression/leakdown test?
only because i had a car overheating and i checked all i could think of and it turned out to be bad gears inside the sc; the teeth were damage on the center of both gears so that they would lock during the first spins but then work there way to the spot where both sets of theeth were gone and the pump would stop turning. (i know kinda hard to picture...)
by any chance have you done a compression/leakdown test?
Trending Topics
#8
#11
#12
Join Date: Jul 2003
Location: Brunswick,Maine
Posts: 92
Likes: 0
Received 0 Likes
on
0 Posts
FUSES?
It is now blowing the 5 amp fuse, every time I start it, within 5 minutes or so, and I have not had the service to separate the fuses. Hope that is all it is, all I can imagine is a warped head, or head gasket, or blockage in the line.
no mixture in exhaust gases, no leakdown/ compression done yet.
I get NO HEAT to the radiator.
engine runs well, goes into low idle.
as it is overheating, I can still touch the radiator with my bare hand.
Bled fine and I believe completely, bled it with front end up after draining it to install water pump and thermo.
Will check power steering fan again and replace, unless anyone has any other ideas???
thank you for all of the input
no mixture in exhaust gases, no leakdown/ compression done yet.
I get NO HEAT to the radiator.
engine runs well, goes into low idle.
as it is overheating, I can still touch the radiator with my bare hand.
Bled fine and I believe completely, bled it with front end up after draining it to install water pump and thermo.
Will check power steering fan again and replace, unless anyone has any other ideas???
thank you for all of the input
Last edited by LOKI; 12-13-2007 at 08:21 PM.
#13
Any coolant in the oil? (it will have a foamy "milk-chocolate" look to it).
I agree that it doesn't sound like you're getting any circulation at all. When you drained the system, did it seem like an appropriate amount of coolant came out?
The only thing I can think of is to drain the system again and start pulling hoses. I had a rubber oil cooler line once where the inner lining of the hose separated from the hose wall, and would "flap" into the oil stream, blocking it like a check valve. But it would only do it under high flow/high pressure conditions, so when we removed the hose, we could pour cleaner through it all day long and it didn't look like anything was wrong with it.
I agree that it doesn't sound like you're getting any circulation at all. When you drained the system, did it seem like an appropriate amount of coolant came out?
The only thing I can think of is to drain the system again and start pulling hoses. I had a rubber oil cooler line once where the inner lining of the hose separated from the hose wall, and would "flap" into the oil stream, blocking it like a check valve. But it would only do it under high flow/high pressure conditions, so when we removed the hose, we could pour cleaner through it all day long and it didn't look like anything was wrong with it.
#14
Join Date: Jul 2003
Location: Brunswick,Maine
Posts: 92
Likes: 0
Received 0 Likes
on
0 Posts
What does the fuse issue mean?
Does the fuse popping repeatedly mean the Power Steering fan is the issue?
I am going to pull hoses and check for blockages, but I think whatever is causing the fuse to pop is also causing my overheating. No coolant in the oil, no mixture in exhaust gases, no leaks. thank you for all of the advice.
I am going to pull hoses and check for blockages, but I think whatever is causing the fuse to pop is also causing my overheating. No coolant in the oil, no mixture in exhaust gases, no leaks. thank you for all of the advice.
#15
Does the fuse popping repeatedly mean the Power Steering fan is the issue?
I am going to pull hoses and check for blockages, but I think whatever is causing the fuse to pop is also causing my overheating. No coolant in the oil, no mixture in exhaust gases, no leaks. thank you for all of the advice.
I am going to pull hoses and check for blockages, but I think whatever is causing the fuse to pop is also causing my overheating. No coolant in the oil, no mixture in exhaust gases, no leaks. thank you for all of the advice.
#16
4th Gear
iTrader: (10)
Join Date: Dec 2006
Location: Coconut Creek, FL.
Posts: 318
Likes: 0
Received 0 Likes
on
0 Posts
Does the fuse popping repeatedly mean the Power Steering fan is the issue?
I am going to pull hoses and check for blockages, but I think whatever is causing the fuse to pop is also causing my overheating. No coolant in the oil, no mixture in exhaust gases, no leaks. thank you for all of the advice.
I am going to pull hoses and check for blockages, but I think whatever is causing the fuse to pop is also causing my overheating. No coolant in the oil, no mixture in exhaust gases, no leaks. thank you for all of the advice.
#18
just for the record, it is quite hard to bleed out system for some reason. Took almost 3 days of driving around with the heater going full blast to finally get mine air free. What a pain it was. On short trips, it would suck any more water in, but drive for 20 minutes, and my reservoir was dry. Took 3 fills of the reservoir after 20 minutes drives to finally get the heater to blow hot (not just warm) and for it to stop sucking water from the tank.
Beecher
Beecher
#19
#20
BTW, my 05 MCS has 2 bleed screws: the plastic one on the hose at the front of the car coming from the radiator, and the 8mm one just above the thermostat housing. I would highly recommend bleeding both, as until I did this I was still getting overheating.
Of course, if you have an earlier model it may not have both bleeds.
good luck.
Of course, if you have an earlier model it may not have both bleeds.
good luck.
#21
BTW, my 05 MCS has 2 bleed screws: the plastic one on the hose at the front of the car coming from the radiator, and the 8mm one just above the thermostat housing. I would highly recommend bleeding both, as until I did this I was still getting overheating.
Of course, if you have an earlier model it may not have both bleeds.
good luck.
Of course, if you have an earlier model it may not have both bleeds.
good luck.
#22
#23
The other plastic bleeder is on the heater core lines going into the firewall. it looks just like the plastic one on the front of the engine bay. and the other one is the 8mm bolt(goldish color) sitting to the right of the intake manifold when looking down onto the engine.
its on a metal hose that follows the side of the cylinder head. so if you look thru the right lower corner of the intake manifold it will be there.
#24
Join Date: Jul 2003
Location: Brunswick,Maine
Posts: 92
Likes: 0
Received 0 Likes
on
0 Posts
Here's the latest
I have little patience left for this string of difficulties. I disconnected the P/S fan, and the cooling fan now works, but it still overheats. Fuse no longer blows every 5 minutes, but it still overheats. Rechecked thermostat install, rechecked water pump install ( Pain in the unowhat ) tried to clear all cooling system hoses, found a clay-like substance in the hose system, gray and, well clay-like. thought I had it solved, but no such luck.
Think I am going to bite the bullet and fork over the greenbacks for a guaranteed fix.
Frustration passed five days ago, now I must just accept this situation, or shoot my car. Like the car, so I will give it one more chance. Hope the pros can deduce what I could not. Thank you all for the help, feel free to keep the advice coming if you have some insight as to what is going on.
Think I am going to bite the bullet and fork over the greenbacks for a guaranteed fix.
Frustration passed five days ago, now I must just accept this situation, or shoot my car. Like the car, so I will give it one more chance. Hope the pros can deduce what I could not. Thank you all for the help, feel free to keep the advice coming if you have some insight as to what is going on.