WTB ECM 1990 ZR-1 - ZR-1 Net Registry Forums

John Boothby · 01-16-2014

Looks like I might need an ECM.

Schrade · 01-16-2014

Why are you thinking this Mr B.?

What test confirmed that a circuit failed between ECM input, and ECM circuit output?

(same B/Day there JB - anniversary of flight!)

Kevin · 01-16-2014

you can use any year zr-1 ecm in any year zr-1. I ran a 94 ecm as a test piece earlier this year. I also need an ecm

FU · 01-16-2014

Marc may be able to help you out John.

John Boothby · 01-16-2014

I ran the grounding C17 pin described by Haibeck. However, I have noticed that the MAP sensor has a lot of oil in it. I also noticed that the PCV valves are real oily. I ordered a new MAP and hose from Jerry, and will see if this solves the code 61 problem. Everything under the plenum is working according to the grounding test. It is either a sensor or the ECM. I beleive I will hold off on the ECM unil I replace the PCV valves and MAP sensor and hose. I may need a catch can. I have not had this problem before, and the car does not seem to be using oil. I drive about 1200-1500 miles annually and change the oil once a year. Never have added oil. I do beleive the oil has been overfilled by the dealer, even though I have emphatically told him to only add no more than 9 quarts.

Great responces. Thanks guys!!

Schrade · 01-16-2014

I did half a dozen closed loop cycles, idle only, just recently, after top end CLEANUP, and upon repeat plenum pull, had some NEW oil pooled at PCV-to-plenum inlet.

Marc said completely normal, even after such a short time...

bradley · 01-16-2014

code 61 is usually a port throttle solenoid failure. I know I had this happen to my 90. the vac system will still hold vacuum ,but the port throttle prevents things from working . kind of a generic explanation .

bradley · 01-16-2014

Quote:

Originally Posted by Schrade

I did half a dozen closed loop cycles, idle only, just recently, after top end CLEANUP, and upon repeat plenum pull, had some NEW oil pooled at PCV-to-plenum inlet.

Marc said completely normal, even after such a short time...

a catch can solved that problem for me .dynamite has a good little how to if you would like to install one

John Boothby · 01-16-2014

Quote:

Originally Posted by bradley

code 61 is usually a port throttle solenoid failure. I know I had this happen to my 90. the vac system will still hold vacuum ,but the port throttle prevents things from working . kind of a generic explanation .

Yea, I know. I replaced the solenoid and I still get the 61. When I had the plenum off, I checked the actuators and vacumn holding integrity and all checked out.

Schrade · 01-16-2014

Quote:

Originally Posted by bradley

a catch can solved that problem for me .dynamite has a good little how to if you would like to install one

I'm considering that Bradley - the thought of the oil pulling through the burn has little appeal.

I asked Marc, and Dom, about routing the line in front of the air filter, with the plenum inlet capped. They weren't really impressed...

I'm going to investigate further here. Good vacuum through a fabbed port is necessary.

01-16-2014	#1
John Boothby Join Date: Jul 2005 Location: Las Vegas, Nevada Posts: 777	WTB ECM 1990 ZR-1 Looks like I might need an ECM. __________________ JB 1990 #148 Red/Saddle Haibeck AYBKG5 Chip/RC Engineering/Flowmasters/K&N/Samco/Fuzzy Dice :cheers:

01-16-2014	#2
Schrade Join Date: Dec 2012 Location: NC Posts: 1,786	Re: WTB ECM 1990 ZR-1 Why are you thinking this Mr B.? What test confirmed that a circuit failed between ECM input, and ECM circuit output? (same B/Day there JB - anniversary of flight!) __________________ I'm getting my snappics / threads removed blindly as fast as I can, to get in compliance with copyright / license TOS on the boards here (lots of FSM pages and other copyright / license violations on my part; sorry guys). And thanks to all the guys who didn't whine when I posted those FSM copyrighted / licensed stuff in my threads... ( :thumbsup: [b]and to think I complied with a mod's request to delete a pic of him in a Challenge Car in NCM Museum, so he wouldn't get in hot water)[/b] Thanks to several guys here for sending parts FREE; BearlyFlying, WeGone, Geezer, GoldCylon, and more there, TonyD, mike100, fletchusmc... 1990 #2794; 4L60e Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless, Power Effects 3" [IMG]https://lh5.googleusercontent.com/-GHpfzty7DVU/UQn-0Ru2xAI/AAAAAAAAA14/08mz1p4QLD4/s445/Screenshot-5.png[/IMG] Last edited by Schrade; 01-16-2014 at 05:00 PM.

01-16-2014	#3
Kevin Join Date: Jun 2005 Location: pittsburgh Posts: 4,633	Re: WTB ECM 1990 ZR-1 you can use any year zr-1 ecm in any year zr-1. I ran a 94 ecm as a test piece earlier this year. I also need an ecm __________________ It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B"

01-16-2014	#4
FU Join Date: Mar 2004 Location: Found Member Posts: 4,346	Re: WTB ECM 1990 ZR-1 Marc may be able to help you out John. __________________ Frank Urbo. NCM Lifetime member # 982 Registry Founding # 237

01-16-2014	#5
John Boothby Join Date: Jul 2005 Location: Las Vegas, Nevada Posts: 777	Re: WTB ECM 1990 ZR-1 I ran the grounding C17 pin described by Haibeck. However, I have noticed that the MAP sensor has a lot of oil in it. I also noticed that the PCV valves are real oily. I ordered a new MAP and hose from Jerry, and will see if this solves the code 61 problem. Everything under the plenum is working according to the grounding test. It is either a sensor or the ECM. I beleive I will hold off on the ECM unil I replace the PCV valves and MAP sensor and hose. I may need a catch can. I have not had this problem before, and the car does not seem to be using oil. I drive about 1200-1500 miles annually and change the oil once a year. Never have added oil. I do beleive the oil has been overfilled by the dealer, even though I have emphatically told him to only add no more than 9 quarts. Great responces. Thanks guys!! __________________ JB 1990 #148 Red/Saddle Haibeck AYBKG5 Chip/RC Engineering/Flowmasters/K&N/Samco/Fuzzy Dice :cheers:

01-16-2014	#6
Schrade Join Date: Dec 2012 Location: NC Posts: 1,786	Re: WTB ECM 1990 ZR-1 I did half a dozen closed loop cycles, idle only, just recently, after top end CLEANUP, and upon repeat plenum pull, had some NEW oil pooled at PCV-to-plenum inlet. Marc said completely normal, even after such a short time... __________________ I'm getting my snappics / threads removed blindly as fast as I can, to get in compliance with copyright / license TOS on the boards here (lots of FSM pages and other copyright / license violations on my part; sorry guys). And thanks to all the guys who didn't whine when I posted those FSM copyrighted / licensed stuff in my threads... ( :thumbsup: [b]and to think I complied with a mod's request to delete a pic of him in a Challenge Car in NCM Museum, so he wouldn't get in hot water)[/b] Thanks to several guys here for sending parts FREE; BearlyFlying, WeGone, Geezer, GoldCylon, and more there, TonyD, mike100, fletchusmc... 1990 #2794; 4L60e Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless, Power Effects 3" [IMG]https://lh5.googleusercontent.com/-GHpfzty7DVU/UQn-0Ru2xAI/AAAAAAAAA14/08mz1p4QLD4/s445/Screenshot-5.png[/IMG] Last edited by Schrade; 01-16-2014 at 08:58 PM.

01-16-2014	#7
bradley Join Date: Aug 2013 Location: ridgecrest ca Posts: 104	Re: WTB ECM 1990 ZR-1 code 61 is usually a port throttle solenoid failure. I know I had this happen to my 90. the vac system will still hold vacuum ,but the port throttle prevents things from working . kind of a generic explanation .