Hello,

I have a 86 trans am with EGR Valve and a temperature sensor on the EGR Valve.

There are many EGR Valves, I don't which one is the good one with the place for the temperature sensor on it ?

DO you have a part number for the temperature, I found this but not sure :

https://www.corvettemods.com/C4-Corv...or_p_8351.html

And do you have a part number for the control valve ?

Thanks for your help

Marc

 

That is possibly your best chance at finding an EGR temperature sensor. The EGR Diagnostic Switch is a GM 14087416, AC/Delco 212-337, or Standard Motor Products ETS-2.

The EGR valve itself is a negative backpressure type, It is a Standard Motor Products EGV393, still available some places.

The EGR vacuum solenoid is GM 1997169 (Sorenson 7799607), and is still listed as available.

 

I used that exact style EGR temp sensor, all you need to do is cut the plug off the end and splice into the old wire and your all set. This is what finally cured my Code 32. You can save almost $20 if look on eBay or other Corvette places.

https://www.southerncarparts.com/cor...oaAiVsEALw_wcB



If you can’t find the EGR valve Vader mentioned I used AC Delco 214-5538 from Rockauto and had no issues. It has the temp sensor threaded bung and actually clears the plenum because it has the EGR port set up like OE unlike many aftermarket that have a plastic nipple on the top that can possibly interfere with plenum clearance. I didn’t like that it was made in China but it is what it is. Also my car is a 88’ L98.

 

The last year, I replaced EGR + Temp. sensor with:

EGR Valve Standard Motor Products EGV393 +

1986-89 Corvette New EGR Sensor Replacement Switch GM 14087415

This Corvette sensor has a shorter wire that original Trans Am sensor, but I ran the wire under fuel rail and connect it with the original connector with no issues.

It works for me, but today I've pending the legal smog test, but in the last test, the NOX was approved with the old EGR blocked by previous owner

 

Hello All,

Thanks

I ordered the egr valve on rockauto.

I will order the temperature sensor too.

But no way to find The EGR vacuum solenoid is GM 1997169 (Sorenson 7799607) ? do you have a link.

THanks

Marc

 

https://www.thirdgen.org/forums/tpi/...-solenoid.html

 

You can use a later 90-92 egr and delete the malfunction code 32 as a option

 

@Vader if you had the choice of the two EGR Temp sensor’s would you go with a “new” corvette style switch (GM 14087415) or the original “used” one that came on our cars (GM 14087416)? The only issue I have with the corvette part is having to splice wires to make it long enough. I currently see both on ebay for sale so I would like to get a good knowledgeable opinion on which would be better

 

If I had a choice between a new switch and a used one, I would probably lean toward a new one. I can understand an argument for either choice, with a new one being, well, NEW, but possibly of unknown quality and robustness, and an original possibly having a lot of accumulated operating hours. The opposite evidence for the original is that mine is almost 40 years old and functions just fine, so durability is really not a question.

 

Since this thread has popped up I'll ask, if the ceramic part of the temp switch is cracked, does it affect its function ?

 

If the ceramic insulator sleeve is cracked, that does not necessarily mean the switch is bad. The only way to test the switch is heating to somewhere around 600°F and monitoring the switch continuity. If the switch is mostly intact and functioning, the ceramic could be patched with a high-temperature epoxy filler.