Code 41 = new ECM? - Page 2 - ZR-1 Net Registry Forums

Ccmano · 04-30-2019

You may still be experiencing the same basic problem, water in the ECM connectors. I would carefully remove each connector and blow them out with compressed air. Is the connector cover still in place?
H

Weeberone · 04-30-2019

Is the cover the thing velcroed to the top ? Then yes. I removed the connectors once. I didn't blow air on them as I didn't seem to see any moisture. They were smeared with dielectric grease from some previous owner. I just left that on, maybe I should try cleaning that?

Ccmano · 04-30-2019

That new ECM 41 code also indicates the memcal prom may not be seated properly. Double check that. Almost seams like water may have gotten into the ECM. You didn’t pressure wash or something like that? Leave the dielectric grease, if anything add more. This is a strange one.
H

Weeberone · 04-30-2019

No pressure wash, but I was spraying parts of the engine, perposely avoiding the ECM. I guess not careful enough. Cleaned again and now just have the one ECM code 41.

G8nightman · 04-30-2019

Hopefully what ever is wet dries out.

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Ccmano · 04-30-2019

Quote:

Originally Posted by Weeberone

No pressure wash, but I was spraying parts of the engine, perposely avoiding the ECM. I guess not careful enough. Cleaned again and now just have the one ECM code 41.

That’s the memcal. Check the pins and make sure none are bent. Also make sure the sure the side clips fully click in place.
H

Weeberone · 04-30-2019

I’ll have to try again tomorrow.

Ever hear of these guys?

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Ccmano · 05-01-2019

Nope, but back in the day there were dozens of tuners. If you have the original, try putting that in temporarily and see if that changes anything.
H

G8nightman · 05-01-2019

Old corvette tuner most likely outdated tune

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Weeberone · 05-01-2019

Quote:

Originally Posted by Ccmano

Nope, but back in the day there were dozens of tuners. If you have the original, try putting that in temporarily and see if that changes anything.

H

That’s rich. I wish I had the original. There’s a sticker on the other side which might be a date. 1995

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04-30-2019	#11
Ccmano Join Date: Jun 2006 Location: Sparks, NV Posts: 2,852	Re: Code 41 = new ECM? You may still be experiencing the same basic problem, water in the ECM connectors. I would carefully remove each connector and blow them out with compressed air. Is the connector cover still in place? H __________________ 90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold.

04-30-2019	#12
Weeberone Join Date: May 2018 Location: Nanaimo BC Posts: 61	Re: Code 41 = new ECM? Is the cover the thing velcroed to the top ? Then yes. I removed the connectors once. I didn't blow air on them as I didn't seem to see any moisture. They were smeared with dielectric grease from some previous owner. I just left that on, maybe I should try cleaning that?

04-30-2019	#13
Ccmano Join Date: Jun 2006 Location: Sparks, NV Posts: 2,852	Re: Code 41 = new ECM? That new ECM 41 code also indicates the memcal prom may not be seated properly. Double check that. Almost seams like water may have gotten into the ECM. You didn’t pressure wash or something like that? Leave the dielectric grease, if anything add more. This is a strange one. H __________________ 90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold.

04-30-2019	#14
Weeberone Join Date: May 2018 Location: Nanaimo BC Posts: 61	Re: Code 41 = new ECM? No pressure wash, but I was spraying parts of the engine, perposely avoiding the ECM. I guess not careful enough. Cleaned again and now just have the one ECM code 41.

04-30-2019	#15
G8nightman Join Date: Dec 2007 Location: NYC Posts: 1,186	Re: Code 41 = new ECM? Hopefully what ever is wet dries out. Sent from my iPhone using ZR-1 Net Registry __________________ 90 Chevy ZR1 LPE #2315 'SOLD' 90 Chevy ZR1 LPE #2774 'SOLD' 91 Chevy ZR1 Callaway aerobody 91 Chevy ZR1 #1512 91 Chevy ZR1 #951 95 Chevy ZR1 #338 'SOLD' 91 BMW 850i 94 BMW 850csi 95 BMW 850csi 94 Lotus Esprit S4 07 Benz CLS550 06 BMW M5 "SOLD"

04-30-2019	#17
Weeberone Join Date: May 2018 Location: Nanaimo BC Posts: 61	Re: Code 41 = new ECM? I’ll have to try again tomorrow. Ever hear of these guys? Sent from my iPhone using Tapatalk __________________ 1990 Red/Saddle #1521

05-01-2019	#18
Ccmano Join Date: Jun 2006 Location: Sparks, NV Posts: 2,852	Re: Code 41 = new ECM? Nope, but back in the day there were dozens of tuners. If you have the original, try putting that in temporarily and see if that changes anything. H __________________ 90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold.

05-01-2019	#19
G8nightman Join Date: Dec 2007 Location: NYC Posts: 1,186	Re: Code 41 = new ECM? Old corvette tuner most likely outdated tune Sent from my iPhone using ZR-1 Net Registry __________________ 90 Chevy ZR1 LPE #2315 'SOLD' 90 Chevy ZR1 LPE #2774 'SOLD' 91 Chevy ZR1 Callaway aerobody 91 Chevy ZR1 #1512 91 Chevy ZR1 #951 95 Chevy ZR1 #338 'SOLD' 91 BMW 850i 94 BMW 850csi 95 BMW 850csi 94 Lotus Esprit S4 07 Benz CLS550 06 BMW M5 "SOLD"