Overheating and Mechanic-Less
My 1999 just started overheating on me after checking my fluids. At first I thought I just didn't put the coolant cap on tight enough, since some fluid actually sprayed out into the trunk. I filled back up with coolant from the nearest gas station, and the gauge was still fluctuating. It would go into the red zone, then back to normal. It either over heating for sure, or burning off the fluid that sprayed everywhere. If I drive more than 2 miles, I'll get a trunk full of smoke.
Some background, I did get rear ended last year, approx 2k miles ago. This was the first time I took off the cap since the accident. The lady locked up her brakes and I threw my Boxster into neutral right before impact. The dip**************** mechanics at Richlin Imports, harrison city, pa said nothing was wrong. They also did something that causes my horn to go off when I pull on my steering wheel to get out of the vehicle. They refused to look into the horn thing, so I just pulled the fuse for it. Still not sure what mechanic to go to next. I know this is nothing to just mess around with so, Anyone out there know where to start? |
You probably need to at least bleed the air from your cooling system, typically done by applying vacuum.
If it's still overheating, I'd suspect your water pump is on the way out. |
are you saying that you were not overheating until you took cap off to check coolant in overflow tank?was it running at right temp before that,was coolant at right level?.maybe your coolant cap is no good and taking it off merely was the tipping point so that it no longer holds pressure and possibly you have air in system after you added coolant as well as outdated cap.thats the simplest way to start.
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The fluctuating temperature is a good sign that you have air pockets in the cooling sytem. I would not drive the car in this situation.
1) Replace coolant cap and check for a cracked resevoir, sounds like its failing to hold pressure (the latest cap version has a suffix 04 if I remember correctly. 2) It sounds as though you topped off the system with with coolant from a gas station - be very carefull as the Porsche coolant does not mix with a lot of commercial type glycols and causes the coolant fluids to gell. Not a good proposition. 3) Once you have sorted out the resevoir & coolant problems, open up the bleed valve (mounted on top of the coolant resevoir) for at least 3 or 4 heat / cool cycles to get rid of the air pockets. Check coolant level after each cooldown and top off as required. If you are not confidant with the above, get a competant Porsche shop to replace the resevoir /coolant and bleed the system. We have a very good shop owner on the Forum (JFPinPA) who may be able to help..... |
Crap, I was worried about the coolant, but the reservoir was soo low and I didn't have many options being 50 miles from home.
It was not overheating before I removed the cap. It is hard to see the fluid level without removing the cap. This was the first time I did it since getting hit. I'll look for ways to flush the coolant and check the reservoir. I'll look into the water pump too, but that might be above my head. Where is the best place to shop for a new cap and coolant? Unfortunately, It doesn't look like I can use my Amazon Prime account for this one. So far, Suncoast has the best pricing for the cap and coolant. Ebay has a reservoir from DEUTSCHEPARTSUSA for $175, although I hope that doesn't need replaced. Could that Sheetz gas station coolant have caused engine or water pump problems after a 75 mile drive? |
you can check coolant tank by pulling carpet in trunk,i believe there is a diy either on pelican forum or pedros boxster diy.check rug for wetness,look under carpet for fluid signs,this is not positive proof its not leaking as there can be very small cracks..i would go with cap first.suncoast price is good.i paid a lot more from dealer.start with simple solutions.check pedros diy for bleeding procedure,consider buying a bently manual as well as 101 projects book from pelican parts.you can alos take a look at pump and hoses below for signs of leakage.
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Here are a pair of links about your horn problem (usually the airbag bracket needs to replaced):
http://986forum.com/forums/general-discussions/36185-horn-problem.html http://rennsportkc.com/porsche-996-986-boxster-horn-repair-rennsport-kansas-city/ |
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If you haven't done so already, join the PCA, then check with your local Porsche dealer for parts. You'll get a 15% (or more) discount on parts. The coolant I bought was unmixed at $42 a gallon. Cheaper than any mail order. Including Suncoast. Takes three gallons for a complete fill. Personally, if you are going to go this route I'd suggest you consider looking at your hoses, pump, and a low temperature thermostat too. If the car has enough miles (my OEM pump died at about 72K). At that time I replaced the pump, hoses, thermostat and used the uView Airlift 550000 vacume fill system. The uView is much easier to sue than burping the motor to fill it. Highly recommend it. |
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As for coolant or parts pricing, try Sunset Porsche in Beaverton, OR ((800) 346-0182); they have consistently had the best pricing around. |
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Jeff, thanks for the clarification.
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Pentosin G12
JFP have you ever heard of or tried the Pentosin G12? On Amazon it's rated 5 out of 5 stars and there are a few comments of 911 and Cayman owners saying it works great. Amazon.com: Customer Reviews: Pentosin G12 Coolant For Aluminum Engines (1.5 Liter)
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Second issue is that a lot of shops only use the Porsche coolant (mine included) simply because it is a very capable and long lived product, and obviously totally compatible with the car's alloys. The OEM coolant is well known for not behaving well when mixed with some other coolants, so we only add distilled water to cars we do not know the history on. Not all shops do this, so it is possible that a shop could add Porsche coolant to an otherwise clean system that has another brand coolant in it, and promptly gell the system. As I said, we only use the OEM coolant; it performs very well, lives a long time if installed in a clean system and only mixed with distilled water. It also in not all that expensive, and readily available. |
Very Good Point, Thanks.
I just got off the phone from Pelican Parts. The Porsche coolant is around the same cost as Pentosin anyway, so I have the Porsche fluid ordered. I'm going to flush the system with distilled water a few times first. Since I put standard gas station premix in, would you suggest additional removal/cleaning of the radiator? Wondering what to use there. I'll do a quick search here. Thanks Again Jeff! Tim |
I highly suggest that you secure the cap properly and watch to see if the coolant system is working properly like the fans come on. It's very easy to messed up. I've done it but caught it on time.
The needle should be bt the 8 and 0 of 180. Why didn't porsche have a middle mark like all of the other luxury sport cars? Does the new one simplify the coolant temp guage? I think porsche overthink on that one. |
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http://www.prestone.com/sites/defaul...or_cleaner.png After draining off this stuff, you will need a couple full system water flushes before adding the new coolant. |
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Well, I got some splendid f*n news for me! The freakin drain cap is on so tight that bent my allen wrench and stripped the corners on the cap. It's either rusted on there with the strength of Ironman, or German's don't know their righty tightys. I'll try some PB blaster on it if I can get some tomorrow.
The most concerning part now is after 10 minutes of sitting in idle and pump the gas pedal, the gauge still reads 100 and my heater isn't working even tho it's on high. Feel like it will never end :-/ Thanks for the advice with the cleaner Jeff. With how fussy it's being I wouldn't have trusted anything other than distilled water. That is if I can even get this cap off. |
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