XJ Bad head gasket?
07-12-2005, 09:21 AM
#1
Guest
Posts: n/a
XJ Bad head gasket?
Hi guys,
My wife has a 2000 Cherokee 4.0L with 80k miles. For the past month or so I
have been refilling the coolant recovery tank weekly. No leak to be found
anywhere. The oil looked fine, no hot chocolate look. I cleaned the oil
filler cap and replaced it. One week later I examined it and there is a
greenish-yellow sludge on it. It appears water soluble. I'm thinking this is
not good news. How common is this? Not much discussion of bad head gaskets
or cracks with this engine.
The next problem may be related. We have also been experiencing intermittent
check gauge light. The oil pressure at idle dips well below 10 lbs sometimes
under very hot conditions. I have verified this with a mechanical gauge. I
have a 98 TJ, same engine and mileage. In extreme heat, my oil pressure may
hit a low of 10 at idle, but never lower, usually closer to 20 under less
extreme temperatures. The 10lbs doesn't bother me, but the Cherokee dipping
down to 5lbs or lower does bother me. Pressure while driving seems normal.
Now that I discovered possible coolant in the oil, I'm wondering if that is
affecting the idle oil pressure, either due to some frothing or just
clogging the filter. Trade in time? My wife wants something different
anyway. Thanks for any opinions. -Nick
My wife has a 2000 Cherokee 4.0L with 80k miles. For the past month or so I
have been refilling the coolant recovery tank weekly. No leak to be found
anywhere. The oil looked fine, no hot chocolate look. I cleaned the oil
filler cap and replaced it. One week later I examined it and there is a
greenish-yellow sludge on it. It appears water soluble. I'm thinking this is
not good news. How common is this? Not much discussion of bad head gaskets
or cracks with this engine.
The next problem may be related. We have also been experiencing intermittent
check gauge light. The oil pressure at idle dips well below 10 lbs sometimes
under very hot conditions. I have verified this with a mechanical gauge. I
have a 98 TJ, same engine and mileage. In extreme heat, my oil pressure may
hit a low of 10 at idle, but never lower, usually closer to 20 under less
extreme temperatures. The 10lbs doesn't bother me, but the Cherokee dipping
down to 5lbs or lower does bother me. Pressure while driving seems normal.
Now that I discovered possible coolant in the oil, I'm wondering if that is
affecting the idle oil pressure, either due to some frothing or just
clogging the filter. Trade in time? My wife wants something different
anyway. Thanks for any opinions. -Nick
07-12-2005, 03:59 PM
#2
Guest
Posts: n/a
Re: XJ Bad head gasket?
Trade in time. Next time follow the maintenance schedule:
http://www.----------.com/lubeSchedule.pdf
God Bless America, ßill O|||||||O
mailto:--------------------
NickT wrote:
>
> Hi guys,
> My wife has a 2000 Cherokee 4.0L with 80k miles. For the past month or so I
> have been refilling the coolant recovery tank weekly. No leak to be found
> anywhere. The oil looked fine, no hot chocolate look. I cleaned the oil
> filler cap and replaced it. One week later I examined it and there is a
> greenish-yellow sludge on it. It appears water soluble. I'm thinking this is
> not good news. How common is this? Not much discussion of bad head gaskets
> or cracks with this engine.
>
> The next problem may be related. We have also been experiencing intermittent
> check gauge light. The oil pressure at idle dips well below 10 lbs sometimes
> under very hot conditions. I have verified this with a mechanical gauge. I
> have a 98 TJ, same engine and mileage. In extreme heat, my oil pressure may
> hit a low of 10 at idle, but never lower, usually closer to 20 under less
> extreme temperatures. The 10lbs doesn't bother me, but the Cherokee dipping
> down to 5lbs or lower does bother me. Pressure while driving seems normal.
> Now that I discovered possible coolant in the oil, I'm wondering if that is
> affecting the idle oil pressure, either due to some frothing or just
> clogging the filter. Trade in time? My wife wants something different
> anyway. Thanks for any opinions. -Nick
http://www.----------.com/lubeSchedule.pdf
God Bless America, ßill O|||||||O
mailto:--------------------
NickT wrote:
>
> Hi guys,
> My wife has a 2000 Cherokee 4.0L with 80k miles. For the past month or so I
> have been refilling the coolant recovery tank weekly. No leak to be found
> anywhere. The oil looked fine, no hot chocolate look. I cleaned the oil
> filler cap and replaced it. One week later I examined it and there is a
> greenish-yellow sludge on it. It appears water soluble. I'm thinking this is
> not good news. How common is this? Not much discussion of bad head gaskets
> or cracks with this engine.
>
> The next problem may be related. We have also been experiencing intermittent
> check gauge light. The oil pressure at idle dips well below 10 lbs sometimes
> under very hot conditions. I have verified this with a mechanical gauge. I
> have a 98 TJ, same engine and mileage. In extreme heat, my oil pressure may
> hit a low of 10 at idle, but never lower, usually closer to 20 under less
> extreme temperatures. The 10lbs doesn't bother me, but the Cherokee dipping
> down to 5lbs or lower does bother me. Pressure while driving seems normal.
> Now that I discovered possible coolant in the oil, I'm wondering if that is
> affecting the idle oil pressure, either due to some frothing or just
> clogging the filter. Trade in time? My wife wants something different
> anyway. Thanks for any opinions. -Nick
07-12-2005, 03:59 PM
#3
Guest
Posts: n/a
Re: XJ Bad head gasket?
Trade in time. Next time follow the maintenance schedule:
http://www.----------.com/lubeSchedule.pdf
God Bless America, ßill O|||||||O
mailto:--------------------
NickT wrote:
>
> Hi guys,
> My wife has a 2000 Cherokee 4.0L with 80k miles. For the past month or so I
> have been refilling the coolant recovery tank weekly. No leak to be found
> anywhere. The oil looked fine, no hot chocolate look. I cleaned the oil
> filler cap and replaced it. One week later I examined it and there is a
> greenish-yellow sludge on it. It appears water soluble. I'm thinking this is
> not good news. How common is this? Not much discussion of bad head gaskets
> or cracks with this engine.
>
> The next problem may be related. We have also been experiencing intermittent
> check gauge light. The oil pressure at idle dips well below 10 lbs sometimes
> under very hot conditions. I have verified this with a mechanical gauge. I
> have a 98 TJ, same engine and mileage. In extreme heat, my oil pressure may
> hit a low of 10 at idle, but never lower, usually closer to 20 under less
> extreme temperatures. The 10lbs doesn't bother me, but the Cherokee dipping
> down to 5lbs or lower does bother me. Pressure while driving seems normal.
> Now that I discovered possible coolant in the oil, I'm wondering if that is
> affecting the idle oil pressure, either due to some frothing or just
> clogging the filter. Trade in time? My wife wants something different
> anyway. Thanks for any opinions. -Nick
http://www.----------.com/lubeSchedule.pdf
God Bless America, ßill O|||||||O
mailto:--------------------
NickT wrote:
>
> Hi guys,
> My wife has a 2000 Cherokee 4.0L with 80k miles. For the past month or so I
> have been refilling the coolant recovery tank weekly. No leak to be found
> anywhere. The oil looked fine, no hot chocolate look. I cleaned the oil
> filler cap and replaced it. One week later I examined it and there is a
> greenish-yellow sludge on it. It appears water soluble. I'm thinking this is
> not good news. How common is this? Not much discussion of bad head gaskets
> or cracks with this engine.
>
> The next problem may be related. We have also been experiencing intermittent
> check gauge light. The oil pressure at idle dips well below 10 lbs sometimes
> under very hot conditions. I have verified this with a mechanical gauge. I
> have a 98 TJ, same engine and mileage. In extreme heat, my oil pressure may
> hit a low of 10 at idle, but never lower, usually closer to 20 under less
> extreme temperatures. The 10lbs doesn't bother me, but the Cherokee dipping
> down to 5lbs or lower does bother me. Pressure while driving seems normal.
> Now that I discovered possible coolant in the oil, I'm wondering if that is
> affecting the idle oil pressure, either due to some frothing or just
> clogging the filter. Trade in time? My wife wants something different
> anyway. Thanks for any opinions. -Nick
07-12-2005, 03:59 PM
#4
Guest
Posts: n/a
Re: XJ Bad head gasket?
Trade in time. Next time follow the maintenance schedule:
http://www.----------.com/lubeSchedule.pdf
God Bless America, ßill O|||||||O
mailto:--------------------
NickT wrote:
>
> Hi guys,
> My wife has a 2000 Cherokee 4.0L with 80k miles. For the past month or so I
> have been refilling the coolant recovery tank weekly. No leak to be found
> anywhere. The oil looked fine, no hot chocolate look. I cleaned the oil
> filler cap and replaced it. One week later I examined it and there is a
> greenish-yellow sludge on it. It appears water soluble. I'm thinking this is
> not good news. How common is this? Not much discussion of bad head gaskets
> or cracks with this engine.
>
> The next problem may be related. We have also been experiencing intermittent
> check gauge light. The oil pressure at idle dips well below 10 lbs sometimes
> under very hot conditions. I have verified this with a mechanical gauge. I
> have a 98 TJ, same engine and mileage. In extreme heat, my oil pressure may
> hit a low of 10 at idle, but never lower, usually closer to 20 under less
> extreme temperatures. The 10lbs doesn't bother me, but the Cherokee dipping
> down to 5lbs or lower does bother me. Pressure while driving seems normal.
> Now that I discovered possible coolant in the oil, I'm wondering if that is
> affecting the idle oil pressure, either due to some frothing or just
> clogging the filter. Trade in time? My wife wants something different
> anyway. Thanks for any opinions. -Nick
http://www.----------.com/lubeSchedule.pdf
God Bless America, ßill O|||||||O
mailto:--------------------
NickT wrote:
>
> Hi guys,
> My wife has a 2000 Cherokee 4.0L with 80k miles. For the past month or so I
> have been refilling the coolant recovery tank weekly. No leak to be found
> anywhere. The oil looked fine, no hot chocolate look. I cleaned the oil
> filler cap and replaced it. One week later I examined it and there is a
> greenish-yellow sludge on it. It appears water soluble. I'm thinking this is
> not good news. How common is this? Not much discussion of bad head gaskets
> or cracks with this engine.
>
> The next problem may be related. We have also been experiencing intermittent
> check gauge light. The oil pressure at idle dips well below 10 lbs sometimes
> under very hot conditions. I have verified this with a mechanical gauge. I
> have a 98 TJ, same engine and mileage. In extreme heat, my oil pressure may
> hit a low of 10 at idle, but never lower, usually closer to 20 under less
> extreme temperatures. The 10lbs doesn't bother me, but the Cherokee dipping
> down to 5lbs or lower does bother me. Pressure while driving seems normal.
> Now that I discovered possible coolant in the oil, I'm wondering if that is
> affecting the idle oil pressure, either due to some frothing or just
> clogging the filter. Trade in time? My wife wants something different
> anyway. Thanks for any opinions. -Nick
07-12-2005, 03:59 PM
#5
Guest
Posts: n/a
Re: XJ Bad head gasket?
Trade in time. Next time follow the maintenance schedule:
http://www.----------.com/lubeSchedule.pdf
God Bless America, ßill O|||||||O
mailto:--------------------
NickT wrote:
>
> Hi guys,
> My wife has a 2000 Cherokee 4.0L with 80k miles. For the past month or so I
> have been refilling the coolant recovery tank weekly. No leak to be found
> anywhere. The oil looked fine, no hot chocolate look. I cleaned the oil
> filler cap and replaced it. One week later I examined it and there is a
> greenish-yellow sludge on it. It appears water soluble. I'm thinking this is
> not good news. How common is this? Not much discussion of bad head gaskets
> or cracks with this engine.
>
> The next problem may be related. We have also been experiencing intermittent
> check gauge light. The oil pressure at idle dips well below 10 lbs sometimes
> under very hot conditions. I have verified this with a mechanical gauge. I
> have a 98 TJ, same engine and mileage. In extreme heat, my oil pressure may
> hit a low of 10 at idle, but never lower, usually closer to 20 under less
> extreme temperatures. The 10lbs doesn't bother me, but the Cherokee dipping
> down to 5lbs or lower does bother me. Pressure while driving seems normal.
> Now that I discovered possible coolant in the oil, I'm wondering if that is
> affecting the idle oil pressure, either due to some frothing or just
> clogging the filter. Trade in time? My wife wants something different
> anyway. Thanks for any opinions. -Nick
http://www.----------.com/lubeSchedule.pdf
God Bless America, ßill O|||||||O
mailto:--------------------
NickT wrote:
>
> Hi guys,
> My wife has a 2000 Cherokee 4.0L with 80k miles. For the past month or so I
> have been refilling the coolant recovery tank weekly. No leak to be found
> anywhere. The oil looked fine, no hot chocolate look. I cleaned the oil
> filler cap and replaced it. One week later I examined it and there is a
> greenish-yellow sludge on it. It appears water soluble. I'm thinking this is
> not good news. How common is this? Not much discussion of bad head gaskets
> or cracks with this engine.
>
> The next problem may be related. We have also been experiencing intermittent
> check gauge light. The oil pressure at idle dips well below 10 lbs sometimes
> under very hot conditions. I have verified this with a mechanical gauge. I
> have a 98 TJ, same engine and mileage. In extreme heat, my oil pressure may
> hit a low of 10 at idle, but never lower, usually closer to 20 under less
> extreme temperatures. The 10lbs doesn't bother me, but the Cherokee dipping
> down to 5lbs or lower does bother me. Pressure while driving seems normal.
> Now that I discovered possible coolant in the oil, I'm wondering if that is
> affecting the idle oil pressure, either due to some frothing or just
> clogging the filter. Trade in time? My wife wants something different
> anyway. Thanks for any opinions. -Nick
07-12-2005, 04:24 PM
#6
Guest
Posts: n/a
Re: XJ Bad head gasket?
Bill,
You have a lot of knowledge and can be very helpful, but I don't know why
you feel a need to make sarcastic and useless comments when you don't have a
real answer. This vehicle has been maintained according to schedule. How
does showing me a maintenance chart answer my question of how common is a
coolant to oil leak or if coolant in the oil will cause low oil pressure?
Try this site http://www.understandmore.com -Nick
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:42D4213A.DBAAB6D@***.net...
> Trade in time. Next time follow the maintenance schedule:
> http://www.----------.com/lubeSchedule.pdf
> God Bless America, ßill O|||||||O
> mailto:--------------------
>
> NickT wrote:
>>
>> Hi guys,
>> My wife has a 2000 Cherokee 4.0L with 80k miles. For the past month or so
>> I
>> have been refilling the coolant recovery tank weekly. No leak to be found
>> anywhere. The oil looked fine, no hot chocolate look. I cleaned the oil
>> filler cap and replaced it. One week later I examined it and there is a
>> greenish-yellow sludge on it. It appears water soluble. I'm thinking this
>> is
>> not good news. How common is this? Not much discussion of bad head
>> gaskets
>> or cracks with this engine.
>>
>> The next problem may be related. We have also been experiencing
>> intermittent
>> check gauge light. The oil pressure at idle dips well below 10 lbs
>> sometimes
>> under very hot conditions. I have verified this with a mechanical gauge.
>> I
>> have a 98 TJ, same engine and mileage. In extreme heat, my oil pressure
>> may
>> hit a low of 10 at idle, but never lower, usually closer to 20 under less
>> extreme temperatures. The 10lbs doesn't bother me, but the Cherokee
>> dipping
>> down to 5lbs or lower does bother me. Pressure while driving seems
>> normal.
>> Now that I discovered possible coolant in the oil, I'm wondering if that
>> is
>> affecting the idle oil pressure, either due to some frothing or just
>> clogging the filter. Trade in time? My wife wants something different
>> anyway. Thanks for any opinions. -Nick
You have a lot of knowledge and can be very helpful, but I don't know why
you feel a need to make sarcastic and useless comments when you don't have a
real answer. This vehicle has been maintained according to schedule. How
does showing me a maintenance chart answer my question of how common is a
coolant to oil leak or if coolant in the oil will cause low oil pressure?
Try this site http://www.understandmore.com -Nick
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:42D4213A.DBAAB6D@***.net...
> Trade in time. Next time follow the maintenance schedule:
> http://www.----------.com/lubeSchedule.pdf
> God Bless America, ßill O|||||||O
> mailto:--------------------
>
> NickT wrote:
>>
>> Hi guys,
>> My wife has a 2000 Cherokee 4.0L with 80k miles. For the past month or so
>> I
>> have been refilling the coolant recovery tank weekly. No leak to be found
>> anywhere. The oil looked fine, no hot chocolate look. I cleaned the oil
>> filler cap and replaced it. One week later I examined it and there is a
>> greenish-yellow sludge on it. It appears water soluble. I'm thinking this
>> is
>> not good news. How common is this? Not much discussion of bad head
>> gaskets
>> or cracks with this engine.
>>
>> The next problem may be related. We have also been experiencing
>> intermittent
>> check gauge light. The oil pressure at idle dips well below 10 lbs
>> sometimes
>> under very hot conditions. I have verified this with a mechanical gauge.
>> I
>> have a 98 TJ, same engine and mileage. In extreme heat, my oil pressure
>> may
>> hit a low of 10 at idle, but never lower, usually closer to 20 under less
>> extreme temperatures. The 10lbs doesn't bother me, but the Cherokee
>> dipping
>> down to 5lbs or lower does bother me. Pressure while driving seems
>> normal.
>> Now that I discovered possible coolant in the oil, I'm wondering if that
>> is
>> affecting the idle oil pressure, either due to some frothing or just
>> clogging the filter. Trade in time? My wife wants something different
>> anyway. Thanks for any opinions. -Nick
07-12-2005, 04:24 PM
#7
Guest
Posts: n/a
Re: XJ Bad head gasket?
Bill,
You have a lot of knowledge and can be very helpful, but I don't know why
you feel a need to make sarcastic and useless comments when you don't have a
real answer. This vehicle has been maintained according to schedule. How
does showing me a maintenance chart answer my question of how common is a
coolant to oil leak or if coolant in the oil will cause low oil pressure?
Try this site http://www.understandmore.com -Nick
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:42D4213A.DBAAB6D@***.net...
> Trade in time. Next time follow the maintenance schedule:
> http://www.----------.com/lubeSchedule.pdf
> God Bless America, ßill O|||||||O
> mailto:--------------------
>
> NickT wrote:
>>
>> Hi guys,
>> My wife has a 2000 Cherokee 4.0L with 80k miles. For the past month or so
>> I
>> have been refilling the coolant recovery tank weekly. No leak to be found
>> anywhere. The oil looked fine, no hot chocolate look. I cleaned the oil
>> filler cap and replaced it. One week later I examined it and there is a
>> greenish-yellow sludge on it. It appears water soluble. I'm thinking this
>> is
>> not good news. How common is this? Not much discussion of bad head
>> gaskets
>> or cracks with this engine.
>>
>> The next problem may be related. We have also been experiencing
>> intermittent
>> check gauge light. The oil pressure at idle dips well below 10 lbs
>> sometimes
>> under very hot conditions. I have verified this with a mechanical gauge.
>> I
>> have a 98 TJ, same engine and mileage. In extreme heat, my oil pressure
>> may
>> hit a low of 10 at idle, but never lower, usually closer to 20 under less
>> extreme temperatures. The 10lbs doesn't bother me, but the Cherokee
>> dipping
>> down to 5lbs or lower does bother me. Pressure while driving seems
>> normal.
>> Now that I discovered possible coolant in the oil, I'm wondering if that
>> is
>> affecting the idle oil pressure, either due to some frothing or just
>> clogging the filter. Trade in time? My wife wants something different
>> anyway. Thanks for any opinions. -Nick
You have a lot of knowledge and can be very helpful, but I don't know why
you feel a need to make sarcastic and useless comments when you don't have a
real answer. This vehicle has been maintained according to schedule. How
does showing me a maintenance chart answer my question of how common is a
coolant to oil leak or if coolant in the oil will cause low oil pressure?
Try this site http://www.understandmore.com -Nick
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:42D4213A.DBAAB6D@***.net...
> Trade in time. Next time follow the maintenance schedule:
> http://www.----------.com/lubeSchedule.pdf
> God Bless America, ßill O|||||||O
> mailto:--------------------
>
> NickT wrote:
>>
>> Hi guys,
>> My wife has a 2000 Cherokee 4.0L with 80k miles. For the past month or so
>> I
>> have been refilling the coolant recovery tank weekly. No leak to be found
>> anywhere. The oil looked fine, no hot chocolate look. I cleaned the oil
>> filler cap and replaced it. One week later I examined it and there is a
>> greenish-yellow sludge on it. It appears water soluble. I'm thinking this
>> is
>> not good news. How common is this? Not much discussion of bad head
>> gaskets
>> or cracks with this engine.
>>
>> The next problem may be related. We have also been experiencing
>> intermittent
>> check gauge light. The oil pressure at idle dips well below 10 lbs
>> sometimes
>> under very hot conditions. I have verified this with a mechanical gauge.
>> I
>> have a 98 TJ, same engine and mileage. In extreme heat, my oil pressure
>> may
>> hit a low of 10 at idle, but never lower, usually closer to 20 under less
>> extreme temperatures. The 10lbs doesn't bother me, but the Cherokee
>> dipping
>> down to 5lbs or lower does bother me. Pressure while driving seems
>> normal.
>> Now that I discovered possible coolant in the oil, I'm wondering if that
>> is
>> affecting the idle oil pressure, either due to some frothing or just
>> clogging the filter. Trade in time? My wife wants something different
>> anyway. Thanks for any opinions. -Nick
07-12-2005, 04:24 PM
#8
Guest
Posts: n/a
Re: XJ Bad head gasket?
Bill,
You have a lot of knowledge and can be very helpful, but I don't know why
you feel a need to make sarcastic and useless comments when you don't have a
real answer. This vehicle has been maintained according to schedule. How
does showing me a maintenance chart answer my question of how common is a
coolant to oil leak or if coolant in the oil will cause low oil pressure?
Try this site http://www.understandmore.com -Nick
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:42D4213A.DBAAB6D@***.net...
> Trade in time. Next time follow the maintenance schedule:
> http://www.----------.com/lubeSchedule.pdf
> God Bless America, ßill O|||||||O
> mailto:--------------------
>
> NickT wrote:
>>
>> Hi guys,
>> My wife has a 2000 Cherokee 4.0L with 80k miles. For the past month or so
>> I
>> have been refilling the coolant recovery tank weekly. No leak to be found
>> anywhere. The oil looked fine, no hot chocolate look. I cleaned the oil
>> filler cap and replaced it. One week later I examined it and there is a
>> greenish-yellow sludge on it. It appears water soluble. I'm thinking this
>> is
>> not good news. How common is this? Not much discussion of bad head
>> gaskets
>> or cracks with this engine.
>>
>> The next problem may be related. We have also been experiencing
>> intermittent
>> check gauge light. The oil pressure at idle dips well below 10 lbs
>> sometimes
>> under very hot conditions. I have verified this with a mechanical gauge.
>> I
>> have a 98 TJ, same engine and mileage. In extreme heat, my oil pressure
>> may
>> hit a low of 10 at idle, but never lower, usually closer to 20 under less
>> extreme temperatures. The 10lbs doesn't bother me, but the Cherokee
>> dipping
>> down to 5lbs or lower does bother me. Pressure while driving seems
>> normal.
>> Now that I discovered possible coolant in the oil, I'm wondering if that
>> is
>> affecting the idle oil pressure, either due to some frothing or just
>> clogging the filter. Trade in time? My wife wants something different
>> anyway. Thanks for any opinions. -Nick
You have a lot of knowledge and can be very helpful, but I don't know why
you feel a need to make sarcastic and useless comments when you don't have a
real answer. This vehicle has been maintained according to schedule. How
does showing me a maintenance chart answer my question of how common is a
coolant to oil leak or if coolant in the oil will cause low oil pressure?
Try this site http://www.understandmore.com -Nick
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:42D4213A.DBAAB6D@***.net...
> Trade in time. Next time follow the maintenance schedule:
> http://www.----------.com/lubeSchedule.pdf
> God Bless America, ßill O|||||||O
> mailto:--------------------
>
> NickT wrote:
>>
>> Hi guys,
>> My wife has a 2000 Cherokee 4.0L with 80k miles. For the past month or so
>> I
>> have been refilling the coolant recovery tank weekly. No leak to be found
>> anywhere. The oil looked fine, no hot chocolate look. I cleaned the oil
>> filler cap and replaced it. One week later I examined it and there is a
>> greenish-yellow sludge on it. It appears water soluble. I'm thinking this
>> is
>> not good news. How common is this? Not much discussion of bad head
>> gaskets
>> or cracks with this engine.
>>
>> The next problem may be related. We have also been experiencing
>> intermittent
>> check gauge light. The oil pressure at idle dips well below 10 lbs
>> sometimes
>> under very hot conditions. I have verified this with a mechanical gauge.
>> I
>> have a 98 TJ, same engine and mileage. In extreme heat, my oil pressure
>> may
>> hit a low of 10 at idle, but never lower, usually closer to 20 under less
>> extreme temperatures. The 10lbs doesn't bother me, but the Cherokee
>> dipping
>> down to 5lbs or lower does bother me. Pressure while driving seems
>> normal.
>> Now that I discovered possible coolant in the oil, I'm wondering if that
>> is
>> affecting the idle oil pressure, either due to some frothing or just
>> clogging the filter. Trade in time? My wife wants something different
>> anyway. Thanks for any opinions. -Nick
07-12-2005, 04:24 PM
#9
Guest
Posts: n/a
Re: XJ Bad head gasket?
Bill,
You have a lot of knowledge and can be very helpful, but I don't know why
you feel a need to make sarcastic and useless comments when you don't have a
real answer. This vehicle has been maintained according to schedule. How
does showing me a maintenance chart answer my question of how common is a
coolant to oil leak or if coolant in the oil will cause low oil pressure?
Try this site http://www.understandmore.com -Nick
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:42D4213A.DBAAB6D@***.net...
> Trade in time. Next time follow the maintenance schedule:
> http://www.----------.com/lubeSchedule.pdf
> God Bless America, ßill O|||||||O
> mailto:--------------------
>
> NickT wrote:
>>
>> Hi guys,
>> My wife has a 2000 Cherokee 4.0L with 80k miles. For the past month or so
>> I
>> have been refilling the coolant recovery tank weekly. No leak to be found
>> anywhere. The oil looked fine, no hot chocolate look. I cleaned the oil
>> filler cap and replaced it. One week later I examined it and there is a
>> greenish-yellow sludge on it. It appears water soluble. I'm thinking this
>> is
>> not good news. How common is this? Not much discussion of bad head
>> gaskets
>> or cracks with this engine.
>>
>> The next problem may be related. We have also been experiencing
>> intermittent
>> check gauge light. The oil pressure at idle dips well below 10 lbs
>> sometimes
>> under very hot conditions. I have verified this with a mechanical gauge.
>> I
>> have a 98 TJ, same engine and mileage. In extreme heat, my oil pressure
>> may
>> hit a low of 10 at idle, but never lower, usually closer to 20 under less
>> extreme temperatures. The 10lbs doesn't bother me, but the Cherokee
>> dipping
>> down to 5lbs or lower does bother me. Pressure while driving seems
>> normal.
>> Now that I discovered possible coolant in the oil, I'm wondering if that
>> is
>> affecting the idle oil pressure, either due to some frothing or just
>> clogging the filter. Trade in time? My wife wants something different
>> anyway. Thanks for any opinions. -Nick
You have a lot of knowledge and can be very helpful, but I don't know why
you feel a need to make sarcastic and useless comments when you don't have a
real answer. This vehicle has been maintained according to schedule. How
does showing me a maintenance chart answer my question of how common is a
coolant to oil leak or if coolant in the oil will cause low oil pressure?
Try this site http://www.understandmore.com -Nick
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:42D4213A.DBAAB6D@***.net...
> Trade in time. Next time follow the maintenance schedule:
> http://www.----------.com/lubeSchedule.pdf
> God Bless America, ßill O|||||||O
> mailto:--------------------
>
> NickT wrote:
>>
>> Hi guys,
>> My wife has a 2000 Cherokee 4.0L with 80k miles. For the past month or so
>> I
>> have been refilling the coolant recovery tank weekly. No leak to be found
>> anywhere. The oil looked fine, no hot chocolate look. I cleaned the oil
>> filler cap and replaced it. One week later I examined it and there is a
>> greenish-yellow sludge on it. It appears water soluble. I'm thinking this
>> is
>> not good news. How common is this? Not much discussion of bad head
>> gaskets
>> or cracks with this engine.
>>
>> The next problem may be related. We have also been experiencing
>> intermittent
>> check gauge light. The oil pressure at idle dips well below 10 lbs
>> sometimes
>> under very hot conditions. I have verified this with a mechanical gauge.
>> I
>> have a 98 TJ, same engine and mileage. In extreme heat, my oil pressure
>> may
>> hit a low of 10 at idle, but never lower, usually closer to 20 under less
>> extreme temperatures. The 10lbs doesn't bother me, but the Cherokee
>> dipping
>> down to 5lbs or lower does bother me. Pressure while driving seems
>> normal.
>> Now that I discovered possible coolant in the oil, I'm wondering if that
>> is
>> affecting the idle oil pressure, either due to some frothing or just
>> clogging the filter. Trade in time? My wife wants something different
>> anyway. Thanks for any opinions. -Nick
07-12-2005, 05:57 PM
#10
Guest
Posts: n/a
Re: XJ Bad head gasket?
http://www.noria.com/learning_center...up=OilAnalysis
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
NickT wrote:
>
> Bill,
> You have a lot of knowledge and can be very helpful, but I don't know why
> you feel a need to make sarcastic and useless comments when you don't have a
> real answer. This vehicle has been maintained according to schedule. How
> does showing me a maintenance chart answer my question of how common is a
> coolant to oil leak or if coolant in the oil will cause low oil pressure?
> Try this site http://www.understandmore.com -Nick
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
NickT wrote:
>
> Bill,
> You have a lot of knowledge and can be very helpful, but I don't know why
> you feel a need to make sarcastic and useless comments when you don't have a
> real answer. This vehicle has been maintained according to schedule. How
> does showing me a maintenance chart answer my question of how common is a
> coolant to oil leak or if coolant in the oil will cause low oil pressure?
> Try this site http://www.understandmore.com -Nick
