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Old 10-17-2018, 04:29 AM   #1
L200StillKickn
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2002 L-Series 2.2L Sedan
Wrench 2002 L200 Sedan Diverter Valve Melted, Exhaust Issue?

2002 Saturn L200 2.2L
California emissions exhaust system (Do not live in CA)

I discovered that the diverter valve melted/burned from the side that connects to the hose that goes to the check valve & the hose was missing. While driving my breaks gave out to the point of barely working. Turns out there was extremely hot *air coming out of* the check valve & it melted a hole in the break hose. Replaced the diverter valve & its connecting hose. Within a few minutes of driving the new diverter valve melted on both ends connected to the hoses & destroyed the diverter as well. Found out the check valve was also broken so I replaced that, then the car wouldn't start. Checked the exhaust pipe after removing the check valve & there was no air coming out. The air was releasing out of the check valve again, which means it's is really coming from the exhaust manifold. The air pump is working. I've done some research about possible causes, but would like input & direct communication with people about this. Any help is appreciated.

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Old 10-17-2018, 12:24 PM   #2
02 LW300
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2002 L-Series 2.2L Sedan
2002 L-Series 2.2L Sedan
Default Re: 2002 L200 Sedan Diverter Valve Melted, Exhaust Issue?

Sounds like you have too much restriction in your exhaust system. Usually a plugged catalytic converter is the problem, converters are killed by engines that burn oil. You have to solve the reason or replacing the converter is a temporary repair.

...
2002 L200/5 loaded, loving my stick shift car now with KYB struts and adjustable rear control arms.

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Old 10-18-2018, 12:35 PM   #3
L200StillKickn
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2002 L-Series 2.2L Sedan
Default Re: 2002 L200 Sedan Diverter Valve Melted, Exhaust Issue?

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Originally Posted by 02 LW300 View Post
Sounds like you have too much restriction in your exhaust system. Usually a plugged catalytic converter is the problem, converters are killed by engines that burn oil. You have to solve the reason or replacing the converter is a temporary repair.


Thanks for the reply & I believe you池e absolutely right about the exhaust. I知 ordering the catalytic converter along with something else I know I need for another issue. And thanks for the info about the oil, I actually forgot I have a problem with the oil pan with everything else I致e been dealing with. In your opinion, can a leaky oil pan cause the oil to burn?

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Old 10-18-2018, 03:00 PM   #4
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2002 L-Series 2.2L Sedan
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Default Re: 2002 L200 Sedan Diverter Valve Melted, Exhaust Issue?

No, it is usually valve seals or rings that cause oil consumption.

...
2002 L200/5 loaded, loving my stick shift car now with KYB struts and adjustable rear control arms.

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Old 10-18-2018, 05:07 PM   #5
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2002 L-Series 2.2L Sedan
Default Re: 2002 L200 Sedan Diverter Valve Melted, Exhaust Issue?

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No, it is usually valve seals or rings that cause oil consumption.

Ok, I was asking because I recall a mechanic telling me the leak was coming from the oil pan.

FYI, I知 a woman & I知 learning 🙂 I actually enjoy fixing this car up too.

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Old 10-18-2018, 08:35 PM   #6
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Default Re: 2002 L200 Sedan Diverter Valve Melted, Exhaust Issue?

Man or woman, crawling under the car will confirm or deny oil pan leaks. A hydraulic jack or scissor jack with a jack stand for safety will allow checking under the engine.

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Old 10-18-2018, 08:37 PM   #7
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2002 L-Series 2.2L Sedan
2003 L-Series 3.0L Sedan
Default Re: 2002 L200 Sedan Diverter Valve Melted, Exhaust Issue?

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Originally Posted by L200StillKickn View Post
Ok, I was asking because I recall a mechanic telling me the leak was coming from the oil pan.

FYI, I知 a woman & I知 learning 🙂 I actually enjoy fixing this car up too.
You could have an oil pan leak, but oil from there would not get into the exhaust.

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