Code 41 = new ECM? - Page 6 - ZR-1 Net Registry Forums

Ccmano · 05-08-2019

Quote:

Originally Posted by Weeberone

The vacuum hose is still attached to the MAP sensor.

Both ends? An easy check of the MAP sensors is to swap the two MAP sensors in their respective locations and see if you get a change. The other one is under the ECM on a 90’. No change means that’s not the problem.
H

Weeberone · 05-29-2019

Well my Haibeck chip showed up about a week ago. The car had been sitting for about 2 weeks, so before I put in the new chip I thought I’d see if it was still throwing codes. Well, of course it starts and runs perfectly. I guess it just needed a really good dry out? I don’t know.
Anyway, with a perfectly good Haibeck chip sitting on the bench 3 feet away what would you do? Of course, put that bad boy in.
So I put in the new chip and start it up. Instantly the CEL comes on. It seems to be running fine though so I take it for a drive.
Obviously there’s an issue as it won’t rev with any power above 5K rpm.
Turns out, in my haste and excitement I didn’t have the new chip seated properly.
Once that was fixed the car ran great!
The best part is the high idle that used to hang about 1200rpm for a few seconds while coasting to a stop drops much faster now and sounds like a normal car.
I’m still having an issue of what I perceive as slightly rough running while accelerating, but I’ll start another thread to ask advice about that.
Thanks for all the help on this problem!

Sent from my iPhone using Tapatalk

Ccmano · 05-29-2019

That’s good news.... are the injectors original? Plan on changing them if they are, a good chance that’s your roughness.
H

05-29-2019	#52
Weeberone Join Date: May 2018 Location: Nanaimo BC Posts: 61	Re: Code 41 = new ECM? Well my Haibeck chip showed up about a week ago. The car had been sitting for about 2 weeks, so before I put in the new chip I thought I’d see if it was still throwing codes. Well, of course it starts and runs perfectly. I guess it just needed a really good dry out? I don’t know. Anyway, with a perfectly good Haibeck chip sitting on the bench 3 feet away what would you do? Of course, put that bad boy in. So I put in the new chip and start it up. Instantly the CEL comes on. It seems to be running fine though so I take it for a drive. Obviously there’s an issue as it won’t rev with any power above 5K rpm. Turns out, in my haste and excitement I didn’t have the new chip seated properly. Once that was fixed the car ran great! The best part is the high idle that used to hang about 1200rpm for a few seconds while coasting to a stop drops much faster now and sounds like a normal car. I’m still having an issue of what I perceive as slightly rough running while accelerating, but I’ll start another thread to ask advice about that. Thanks for all the help on this problem! Sent from my iPhone using Tapatalk __________________ 1990 Red/Saddle #1521

05-29-2019	#53
Ccmano Join Date: Jun 2006 Location: Sparks, NV Posts: 2,852	Re: Code 41 = new ECM? That’s good news.... are the injectors original? Plan on changing them if they are, a good chance that’s your roughness. 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.