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Old 01-04-2010, 04:32 PM   #31
carbon02
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Re: Replacing the coolant crossover pipe

Krivasauto--

Sorry to hear about that headgasket, and just thinking of the work you'll have ahead of you now is amazing.

I haven't done anything with our 2000 coolant leak either. It's still external, but fairly slow to nothing if you don't use the heat of the car. Using the heat hard causes more coolant to leak. Don't quite understand why, as you would think that cooling the engine by using the heater would decrease pressure. No leaks inside car, or film on the windows. Pretty sure it's not the heater core.

Anyway-- Sorry to hear about that headgasket, at least you have experience pulling the engine. Maybe the front head could be pulled with the engine in the car, but I'd think working on the timing chains would be difficult.

I'll keep watching your shutterfly site for details.
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Old 01-04-2010, 11:01 PM   #32
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Re: Replacing the coolant crossover pipe

I'm taking my 2000 Intrigue in for an external coolant leak that I've had for a while. I see coolant on the ground (centered left-to-right and ~3/4 forward in the engine compartment). I lose about a liter / 600-700 mi. I tried to have this fixed last year, but the shop incorrectly diagnosed this as a leak at the thermostat - new tstat didn't fix it. From what I've read, I suspect my problem is the coolant crossover pipe and am preparing for a big labor bill. If it is, I'll try to find out how they access it and post back.
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Old 01-05-2010, 04:44 PM   #33
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Re: Replacing the coolant crossover pipe

Krivasauto and other "Intriguer's" with coolant leaks,

I didn't want to scare you away from this repair by stating that it took me 14 hours. Looking back could I have done it quicker? Yeah, I probably could have done it in 6 hours had I not lost one of the RM bolts, and not fussed with being so meticulous. If you've got recent experience with swapping the whole engine, I am sure you have the skills to do it within 6 hours also.

later, Steve

PS. It's been awhile since I did the repair. Not a drop of coolant lost!
PPS. Bummer about the head gasket! may end up changing the crossover gaskets anyway.
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Old 01-12-2010, 12:10 PM   #34
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Re: Replacing the coolant crossover pipe

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Last edited by krivasauto; 09-22-2011 at 07:32 AM. Reason: apology
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Old 01-14-2010, 07:30 PM   #35
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Re: Replacing the coolant crossover pipe

It did end up being the coolant crossover pipe. 6 hrs of labor to remove right exhaust manifold, egr valve, throttle valve. GM certainly could have done a better job on designing this one.
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Old 01-14-2010, 09:09 PM   #36
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Re: Replacing the coolant crossover pipe

Quote:
Originally Posted by steffenk View Post
GM certainly could have done a better job on designing this one.
I'm curious - how many miles on your engine? Do you know what the coolant service history has been? How do you know the supplier of the gaskets didn't let GM down?
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Old 01-14-2010, 09:48 PM   #37
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Re: Replacing the coolant crossover pipe

I have 67K on the car ('00). I changed the original coolant after 8 years and at about 55K. I had meant that the design could have been better thought out to allow access to the pipe by flexing, rather than removing, the manifold. But, the design of the coolant pipe connections could apparently have been better too since they all seem to leak after 8-10 years. There very well may have been problems with the gasket supplier, but with this problem being so pervasive to Intrigues, it does not seem that there was an isolated vintage or batch of inferior gaskets. I'm also willing to bet that the gasket today is the same as it was 10 years ago and will leak again - I'll let you know in another 10yrs
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Old 01-15-2010, 09:23 AM   #38
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Red face Re: Replacing the coolant crossover pipe

I've got a '99, 3.5L, and about 90K miles. Still no drips sinse repair. I totally agree that the design could have been thought out a little better.
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Old 02-17-2010, 08:07 PM   #39
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Re: Replacing the coolant crossover pipe

Hope this thread isn't too old. Looking at this repair - my '99 Intrigue leaving puddles on the floor, not sure if it's this or head gasket (how do you tell?). Just wondering, seems like the RM has to come off to clear two bolts. Could these be backed out and cut off, and the replacements be cut down 1/8" to 1/4" yet still have enough engagement to make a good seal, or is this just making it harder?
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Old 02-18-2010, 09:42 AM   #40
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Thumbs up Re: Replacing the coolant crossover pipe

Murphysvictim,

No, this issue is still fresh in my mind. To find the pjroblem I looked real close with mirrors and lights into the area around the two locations where the crossover attaches, and found weepage in the location. I even carefully hosed the area down and re-checked the next day to be sure I would find fresh coolant.

In my opinion, you are going to want to make sure the job is done properly to insure you never have this problem again. And even though it was a big effort on my part, I am glad I had the extra room to get my hands in there to properly clean and prep the mounting surface.

In my earlier post I said it took me something like 14 hours. But like I discussed in a follow-up post, hindsight I am sure I could have done it in 7, maybe 6 hours. But I was just being too cautious.

Keep us posted, and good luck,
Steve
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Old 02-18-2010, 11:27 AM   #41
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Re: Replacing the coolant crossover pipe

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Last edited by krivasauto; 09-22-2011 at 07:32 AM.
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Old 02-18-2010, 01:47 PM   #42
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Re: Replacing the coolant crossover pipe

Go to http://99intrigue.shutterfly.com/waterpipe ! Has lots of info on the procedure . Good luck !
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Old 02-18-2010, 03:24 PM   #43
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Re: Replacing the coolant crossover pipe

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Last edited by krivasauto; 09-22-2011 at 07:32 AM.
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Old 02-18-2010, 03:34 PM   #44
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Re: Replacing the coolant crossover pipe

Sorry , didn't mean to " step on your toes " !
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Old 02-20-2010, 12:26 PM   #45
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Re: Replacing the coolant crossover pipe

krivasauto, suburbanstevie, et.al. Thanks for the advice ('though I had to look up 'panoply'! these forums are more educational than I realized). I was afraid this would be the answer. Probably doubles the time. That pictorial is very nice, should be quite helpful to any shadetree attempting this job. Trying to be rational here. The car is still nice, but $leak, $wheel bearing, $AC leak - I think it's almost totalled, unless I use sweat equity, but I think I'm going to have to ask for help on this one. Fortunately, for now, antifreeze and water are cheap.
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