1996 Oldsmobile Aurora
4.0 V8
Check engine light
codes = VSS, and EGR
Bought car in this condition. Doesn't overheat per
say, but was running hot to me at 250 degrees.
Work done to repair = Replaced radiator
tip/donation yes
GM tech = aurora guy!
Question = I pressure checked system at 15psi for 15 min. held steady.
I drove for a couple of days, and was loosing coolant. Found the
radiator tank cracked on left side. (funny pressure test didn't find this.
Replaced radiator and still runs at 250 and pukes a little coolant out of
the overflow. Though when I get done driving 20 miles home from work,
and check fluid it is just low, not blowing out like when the radiator
was leaking. I checked fan relays and they are good but when the fans
do come on which takes forever, they both turn on , but slow. If I pull
out relay and jumper I can get it to go fast. So I'm guessing a high
speed relay or temp sensor is bad? I would think at 250 degrees the fan
would spin faster. Also another problem I have is the Instrument
cluster stops working intermediately. Would this be the Body Control Mod? I
pulled it apart and it is getting hot a large resistor looks like its
kind of burnt. Thanks for any help you can give me!
KK:
THANK YOU FOR TIP/DONATION
Hello and welcome.
OK. Allot to look at on this one. First, these engines are know for have head gasket problems.
Does not always show up with pressure tester, just as radiator cracked did not. Letting idle long
till gets hot, looking for bibles in surge tank, then revving up motor and looking for coolant to
come rushing out is a sure sign of headgaskets blown.
Fans electrically. The three relays work together to work the fans. Be sure all fuses are good.
Low speed relay is on the firewall, left or the wiper motor.
I will attach a diagram and circuit description in another e-mail in a few moments.
Yes, sounds like you got the problem with that burned bcm.
Back
4.0 V8
Check engine light
codes = VSS, and EGR
Bought car in this condition. Doesn't overheat per
say, but was running hot to me at 250 degrees.
Work done to repair = Replaced radiator
tip/donation yes
GM tech = aurora guy!
Question = I pressure checked system at 15psi for 15 min. held steady.
I drove for a couple of days, and was loosing coolant. Found the
radiator tank cracked on left side. (funny pressure test didn't find this.
Replaced radiator and still runs at 250 and pukes a little coolant out of
the overflow. Though when I get done driving 20 miles home from work,
and check fluid it is just low, not blowing out like when the radiator
was leaking. I checked fan relays and they are good but when the fans
do come on which takes forever, they both turn on , but slow. If I pull
out relay and jumper I can get it to go fast. So I'm guessing a high
speed relay or temp sensor is bad? I would think at 250 degrees the fan
would spin faster. Also another problem I have is the Instrument
cluster stops working intermediately. Would this be the Body Control Mod? I
pulled it apart and it is getting hot a large resistor looks like its
kind of burnt. Thanks for any help you can give me!
KK:
THANK YOU FOR TIP/DONATION
Hello and welcome.
OK. Allot to look at on this one. First, these engines are know for have head gasket problems.
Does not always show up with pressure tester, just as radiator cracked did not. Letting idle long
till gets hot, looking for bibles in surge tank, then revving up motor and looking for coolant to
come rushing out is a sure sign of headgaskets blown.
Fans electrically. The three relays work together to work the fans. Be sure all fuses are good.
Low speed relay is on the firewall, left or the wiper motor.
I will attach a diagram and circuit description in another e-mail in a few moments.
Yes, sounds like you got the problem with that burned bcm.
Back
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