95 Corvette 16181333 ECM Fan control

[Oysteinbno]

I'll change the O2 sensor.
I meassure 14.4/14.5 volts at idle speed now from the alternator.
The VSS works, because my speedo woorks...
I tried to program the ECU with my original file I downloaded out from the ECU the first time I connected.
But I still get these errors. Can it be some issues with the PCM_EE file I use??

[EagleMark]

I don't think so. The errors are also in TP logs. But reflashing the PCM may not clear codes. Kill power to PCM by disconnecting battery or fuse for a minute. Or use Clear Codes Command in TP. Acquisition, Edit Definition and in Connection Commands choose Clear Codes Data. Then Connect and it will clear codes. Have to change back to Engine Connect when done. There is also trans Connect and Trans Data in there.

Doesn't DataMaster have a Clear Codes?

96lt4c4 says to disable Code 43 and it will disable... but with one non responsive O2 sensor you'll still be Open Loop for now.

There is also a Scaler for "Vss Diagnostic Enable Min RPM" Raise it and the error 97 should not reoccur.

I can't even find my latest $EE ADX since my laptop crash? All I have is V3.2 and I'm sure I had more work done to XDF and ADX then what I have... If anyone has them?

[RobertISaar]

Acquisition, Edit Definition and in Connection Commands choose Clear Codes Data. Then Connect and it will clear codes. Have to change back to Engine Connect when done.

that's kind of an odd way to do it...

right-click the are where the time scrolling bar is, select "data acquisition send command" and you'll be able to send stuff whenever you want. if the command you want to use doesn't show up, go into the ADX editor, find the send or macro command you want to use and check which "manually sendable" boxes you need.

[EagleMark]

If you right click the tool bars and have that checked (check all tool bars) it will be there. But on the old ADX I have it was not set in the Value so has to be done manually...

[EagleMark]

Can't beleive I lost my newest ADX and XDF???

May get them back when I receive my recovery disk... I hadn't uploaded them to $EE thread yet but think I gave them out...

anyone have later versions?

[Oysteinbno]

Doesn't DataMaster have a Clear Codes?

96lt4c4 says to disable Code 43 and it will disable... but with one non responsive O2 sensor you'll still be Open Loop for now.

There is also a Scaler for "Vss Diagnostic Enable Min RPM" Raise it and the error 97 should not reoccur.

Datamaster clear codes. But they come back within 5 seconds.
If I disable code 43 the fan don't start, but I can use a ordinary switch to start the fan.
A new O2 sensor is ordered from Ebay. But since I live in Norway it will take a couple of weeks for me to test it.
I'm also thinking of buying a new ECU. And if I understand this right, I can buy anyone labeled 16181333 or 16188051?
The harness I bought uses a single connector coil ( from 96-97) instead of the original 95 with 2 connections. I've read the pinout and schematics for both 94/95 and 96/97 and there are no differences from the ECU conections as far as I can see.
Starting to regret I didn't buy the harness from Painless Wiring instead of the one from PSIConversion.... :(

[EagleMark]

If they come back they are still there.

Disabling code 43 and fans go off is good. they should be off when cold. thius proves it was in LHM.

Not sure how the one plug would work on a LT1 PCM that has 4 plugs? Got a picture?

[Oysteinbno]

No, I don't have a picture. But the harness I bought is with the right plug for this coil. It's supposed to be a better coil.
If I'm going to buy a new PCM, can I buy a 16188051? It's the same PCM to the 4.3 and 5.7 engines? Only the programming that is the difference??

When I disable code 43 I get the fan errors. But if I'm using a switch to operate the fan, I can disable those codes too.

[EagleMark]

4.3 or 5.7 is the same.

But something does not sound right if 43 is disabled and causes fan error? You sure the wiring is correct?

[Oysteinbno]

Yes I sure the wiring is correct.
When code 43 is enabled the fan starts when the engine code light comes on. And I never get fan error.
The strange thing however is that fan error doesn't appear if I don't connect the wire to the relay.. when code 43 is disabled