New member with questions on coolant leaks
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Hi guys, I just found this board by accident and I'm glad I did. I have a Bonneville (SE) that I bought new in 1993. I've always liked the car and it has served me fairly well. It has a chronic coolant leak behind the throttle body. I took it to a mechanic that I trust and he replaced the intake gasket and that pretty much took care of it. Now, it is 1 year later and it is leaking again.
I've read where the series II engines have a prob with the intakes. Is this a problem with the series I engines also? Can someone recommend a good source for a replacement?
Thanks,
John
PS: I'm sorry if this subject has been beaten to death already
I've read where the series II engines have a prob with the intakes. Is this a problem with the series I engines also? Can someone recommend a good source for a replacement?
Thanks,
John
PS: I'm sorry if this subject has been beaten to death already
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From what I hear it is mostly the series II which has the upper intake problem - upper intake degrades in the EGR pipe area, causing coolant leaks. Just to clarify, which gasket did the mechanic replace on your car, the upper intake or the lower intake?
It might also be the throttle body gasket this time. It'* a rubber seal between the throttle body and the upper intake. It would leak coolant in roughly the same area. It'* a whole lot easier to replace - with some tools and a good manual it shouldn't take you that long.
You can find a lot of good information by searching past threads... use the "search" link in the upper-right corner of the forums page. Some good keywords would be "intake" "failure" "coolant" "egr" "gasket", etc.
It might also be the throttle body gasket this time. It'* a rubber seal between the throttle body and the upper intake. It would leak coolant in roughly the same area. It'* a whole lot easier to replace - with some tools and a good manual it shouldn't take you that long.
You can find a lot of good information by searching past threads... use the "search" link in the upper-right corner of the forums page. Some good keywords would be "intake" "failure" "coolant" "egr" "gasket", etc.
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Originally Posted by JohnnyB
Hi guys, I just found this board by accident and I'm glad I did. I have a Bonneville (SE) that I bought new in 1993. I've always liked the car and it has served me fairly well. It has a chronic coolant leak behind the throttle body. I took it to a mechanic that I trust and he replaced the intake gasket and that pretty much took care of it. Now, it is 1 year later and it is leaking again.
I've read where the series II engines have a prob with the intakes. Is this a problem with the series I engines also? Can someone recommend a good source for a replacement?
Thanks,
John
PS: I'm sorry if this subject has been beaten to death already
I've read where the series II engines have a prob with the intakes. Is this a problem with the series I engines also? Can someone recommend a good source for a replacement?
Thanks,
John
PS: I'm sorry if this subject has been beaten to death already
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Yep i'll second (third?) that on the throttlebody gasket. That happened to my '93.
Hey why is the throttlebody cooled anyway? It doesn't seem to me like it would ever get hot.
Hey why is the throttlebody cooled anyway? It doesn't seem to me like it would ever get hot.
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Thanks for the help guys, I'll tear into it this week.
I believe it is to warm it in cold weather for better gas mileage and reduced emissions on start up. Of course, this also warms your intake air under all other driving applications, thereby reducing power.
Originally Posted by John Deere Boy
Hey why is the throttlebody cooled anyway? It doesn't seem to me like it would ever get hot.
I believe it is to warm it in cold weather for better gas mileage and reduced emissions on start up. Of course, this also warms your intake air under all other driving applications, thereby reducing power.
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Yeah with that throttle body having coolant run through it, it turns into Mr. Ouch after a while of driving. Maybe one can put a solid gasket to keep it from flowing through? OMG I just resurrected a really old thread, haha.
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Originally Posted by CmptrNerd
Yeah with that throttle body having coolant run through it, it turns into Mr. Ouch after a while of driving. Maybe one can put a solid gasket to keep it from flowing through? OMG I just resurrected a really old thread, haha.
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Originally Posted by SSEBONNE4EVA
Lots of people mistake Throttle body leaks for intake gasket leaks.