C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

93 vette w/code 32

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Old Jul 11, 2013 | 06:28 PM
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Default 93 vette w/code 32

Ok, I posted this tread about a month ago as I has issues(See Below)

Ok, my Service Engine Light keeps coming on. I took it to my machanic. He scaned it for the code. 32 code was detected. I replaced both the EGR Valve/Soleniod. No light for about a month. Now the light comes on again. Again I had it scaned and again code 32 was detected. However, I notice each time the light came on after I replaced both the EGR/Solenoid, my Aux fan is on w/engine at 198-200 degrees. Now, If I'm correct, only the primary fan should only come on once the engine temp has reached 228-230 degrees.

Can someone help with this issue. Oh by the way, I've changed the engine coolant temp senor as well.

Thanks



Ok, after all the suggestion I received, I still could not solve this issue. However, I took the advise of my mechanic. I added a bottle of cheron fuel system cleaner and drove on it for about 5-6 miles, perior to filling up the gas tank.(approx 1 mnth ago).

I have to say, the service eng light has not showed itself since. So, if someone else is experiencing this same issue, you may want to add a bottle of fuel system cleaner to your fuel tank.

I thought I'd share this with everyone...

Thanks

Last edited by NJD; Jul 12, 2013 at 01:29 PM.
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Old Jul 11, 2013 | 07:56 PM
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Originally Posted by NJD
........I've changed the engine coolant temp sensor.........
Which sensor did you change?..... the '93 has two coolant sensors....
one located on the water pump (front of engine), and one
in the block (between cyl 7 & 8).

The water pump sensor is digital, and 'talks' to the ECM.
The block sensor is analog, and registers on the dash analog gage.
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Old Jul 12, 2013 | 07:42 AM
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Originally Posted by seabright
Which sensor did you change?..... the '93 has two coolant sensors....
one located on the water pump (front of engine), and one
in the block (between cyl 7 & 8).

The water pump sensor is digital, and 'talks' to the ECM.
The block sensor is analog, and registers on the dash analog gage.
I believe the one on the block is a Coolant Temp Sender and the one in the water pump is the coolant temp sensor. The one that usually acts up and causes engine running problems is the sensor in the water pump..
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Old Jul 12, 2013 | 10:43 AM
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Originally Posted by NJD
Ok, I posted this tread about a month ago as I has issues(See Below)

Ok, my Service Engine Light keeps coming on. I took it to my machanic. He scaned it for the code. 32 code was detected. I replaced both the EGR Valve/Soleniod. No light for about a month. Now the light comes on again. Again I had it scaned and again code 32 was detected. However, I notice each time the light came on after I replaced both the EGR/Solenoid, my Aux fan is on w/engine at 198-200 degrees. Now, If I'm correct, only the primary fan should only come on once the engine temp has reached 228-230 degrees.

Can someone help with this issue. Oh by the way, I've changed the engine coolant temp senor as well.

Thanks



Ok, after all the suggestion I received, I still could not solve this issue. However, I took the advise of my mechanic. I added a bottle of cheron fuel system cleaner and drove on it for about 5-6 miles, perior to filling up the gas tank.(approx 1 mnth ago).

I havbe to say, the service eng light has not showed itself since. So, if someone else is experiencing this same issue, you may want to hust add a bottle of fuel system cleaner to your fuel tank.

I thought I'd share this with everyone...

Thanks
As I have replaced my EGR valve some time back, there were several selections of valves available. I remember it took me a while to figure out what the proper EGR was. My point is the wrong valve may cause the EGR code to activate. Just a thought and suggestion.

Usually the coil in the EGR solenoid will open up (high resistance) to set the code. This can be checked with an ohm meter to verify if it is bad. Off the cuff, probably under 100 ohms

I would also check the electrical connectors and clean them for anything that relates to the EGR electrical connections.
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Old Jul 12, 2013 | 01:03 PM
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I replaced both coolant sensors(front and side). Oh, I fogot to mentioned that I also started using premium fuel only. I also changed the both the EGR Valve and Soleniod. Thus far, the light has not come on agan. So, due the fact I'm using premium fuel only may also have solved my problem.

He pcolt94,

I have a 93 that looks just like yours. Question for you, I don't have the FSM and I just purchased a set of shocks. However, the question presented to me was, do I have z51 suspension? My answer, I'm not sure.

Pcolt94, how can I find out if I have Z51 or not?

Thanks
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Old Jul 12, 2013 | 10:22 PM
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Originally Posted by NJD
He pcolt94,

I have a 93 that looks just like yours. Question for you, I don't have the FSM and I just purchased a set of shocks. However, the question presented to me was, do I have z51 suspension? My answer, I'm not sure.

Pcolt94, how can I find out if I have Z51 or not?

Thanks
I asked the same question many years ago and I will do my best to remember what I was told.

If the steering wheel turns 2 1/4 turns lock to lock, then it is basic steering.
If the steering wheel turns 2 turns lock to lock, then it is Z51 steering and suspension.
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