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93 2.3 diverter valve

Posted: Sat Jul 21, 2018 6:37 pm
by Lovemy6boys
Hi guys! We have had an issue with our Pickup burning up 2 diverter valves and not sure why. I have been unable to find anything as it doesn’t seem to find me anything when I look it up online or even in the manual. Is anyone here familiar with this? And if so any recommendations on where to start or look? TIA

Does anyone know anything about the air bypass/diverter valve?

Posted: Mon Jul 30, 2018 9:00 am
by Lovemy6boys
If anyone here knows anything about this I have some questions PLEASE!!!

Re: 93 2.3 diverter valve

Posted: Mon Jul 30, 2018 10:07 pm
by JoeIsuzu
Based on lack of responses so far, I'm wondering if perhaps this part, or assembly goes by some other name. Is this part of the air conditioning system, or is it something related to the engine?

Jack

Re: 93 2.3 diverter valve

Posted: Tue Jul 31, 2018 1:02 am
by puttputtinpup
There's gotta be a different name for them. Perhaps a better description or a picture of tha part would better help us help you.

Re: 93 2.3 diverter valve

Posted: Tue Jul 31, 2018 7:26 am
by Darby
IMG_1595.JPG


Do you mean this thing? I thought mine was the only truck that still had it. Pricey little devil isn't it?
All I know is it routes the air from that antipollution pump into the exhaust or diverts it out that open hole. I don't see how it could "burn up". There's no heat there. I believe the theory is the fresh air pumped to the exhaust will cause any unburned gasses to be burned.
It is called a diverter valve and Auto Zone has it.

Re: 93 2.3 diverter valve

Posted: Tue Jul 31, 2018 7:53 am
by Darby
On further research it is also called an air switching valve. There is also a check valve between the diverter valve and the exhaust manifold. Possibly a bad one could allow heat to travel from the exhaust to the diverter valve?

Re: 93 2.3 diverter valve

Posted: Thu Aug 16, 2018 11:48 am
by Lovemy6boys
Darby wrote:IMG_1595.JPG

Do you mean this thing? I thought mine was the only truck that still had it. Pricey little devil isn't it?
All I know is it routes the air from that antipollution pump into the exhaust or diverts it out that open hole. I don't see how it could "burn up". There's no heat there. I believe the theory is the fresh air pumped to the exhaust will cause any unburned gasses to be burned.
It is called a diverter valve and Auto Zone has it.



Yes this is the part!! It is a costly part and I will try an attach a picture of the burnt one. As of right now my husband has “bypassed” it but I worry any other damage could come from that.

Re: 93 2.3 diverter valve

Posted: Thu Aug 16, 2018 11:51 am
by Lovemy6boys
Darby wrote:On further research it is also called an air switching valve. There is also a check valve between the diverter valve and the exhaust manifold. Possibly a bad one could allow heat to travel from the exhaust to the diverter valve?



I will let the husband know so he can find this check valve. Thank you for all your responses I had ALMOST given up on coming back lol

Re: 93 2.3 diverter valve

Posted: Thu Aug 16, 2018 12:49 pm
by Darby
Wow, that's quite a melt down.
I've tried to keep my truck as stock as possible. However if there are no emissions concerns, I believe several people on here have eliminated that system completely. Maybe one of them can give you the information to do that.
One last thing, is the air pump pumping? I've got a feeling that would be pricey also.

Re: 93 2.3 diverter valve

Posted: Tue Aug 21, 2018 3:22 pm
by isuzuesque
The part of the air switching valve that is burning up is connected directly to the air injection pipe correct? There should be a check valve there that keeps hot exhaust gas from blowing back down the hose into the switching valve. That check valve is the problem and needs to be replaced. Did the hose that connects them melt as well?

John

Re: 93 2.3 diverter valve

Posted: Fri Aug 31, 2018 4:02 pm
by Lovemy6boys
isuzuesque wrote:The part of the air switching valve that is burning up is connected directly to the air injection pipe correct? There should be a check valve there that keeps hot exhaust gas from blowing back down the hose into the switching valve. That check valve is the problem and needs to be replaced. Did the hose that connects them melt as well?

John


Thank John I will let my husband know so we can get it running properly again! I really appreciate your response.

Carol

Re: 93 2.3 diverter valve

Posted: Fri Aug 31, 2018 4:05 pm
by Lovemy6boys
Darby wrote:Wow, that's quite a melt down.
I've tried to keep my truck as stock as possible. However if there are no emissions concerns, I believe several people on here have eliminated that system completely. Maybe one of them can give you the information to do that.
One last thing, is the air pump pumping? I've got a feeling that would be pricey also.



Darby it is quite a meltdown!! We have since bypassed this system as we are in Florida and there are no emission checks but just like you we really want to keep this P’up stock. So the husband will be checking the check valve and hopefully we can get it back to where it needs to be. I really appreciate all your help with this!!

Carol