Engine code 61 help - Page 2 - ZR-1 Net Registry Forums

Johnny5 · 05-05-2015

i replaced both fuel pumps and checked the diff sensor under the ecm. The diff/map sensor is fine and the pumps are new. Still not opening the secondaries, hesitating and almost stopping at 5k rpm.

Johnny5 · 05-05-2015

i did not clear the codes but 61 came up again.

LGAFF · 05-05-2015

http://www.corvetteactioncenter.com/...diagnosis.html

LGAFF · 05-05-2015

peek down between the runners on the plenum and see if the actuators are opening the secondaries.....flashlight might help

Johnny5 · 05-06-2015

Hey lee that article states that secondaries wont open if any ECM codes are stored so i will clear them after work and pray thats it but i doubt it lol. Thanks. I used a paperclip to read the coded. Can they be cleared in a similar fashion?

Paul Workman · 05-06-2015

Quote:

Originally Posted by Johnny5

Hey lee that article states that secondaries wont open if any ECM codes are stored so i will clear them after work and pray thats it but i doubt it lol. Thanks. I used a paperclip to read the coded. Can they be cleared in a similar fashion?

Lee isn't on line right now, but I dropped in to see how yer gettin along - hope you don't mind.

To reset all the codes, simply disconnect the battery for a minute or so before reconnecting the battery. If the code remains, then it is probably legit.

Good luck!

Paul.

Johnny5 · 05-06-2015

Hey Paul. The code has disappeared but comes up when I plug the top right 2 pins with a paper clip. Will disconnecting the battery delete the codes from the ecm memory (as the light is not currently on)?

Johnny5 · 05-07-2015

Disconnected the battery, replaced the MAP sensor as I found one very cheap and code 61 comes up for a second when flooring the gas. I pulled it after I took the car for a ride. Does anyone live close to NJ and have a Tech 1 that would be willing to help me diagnose this? I replaced the injectors (runs super smooth on regular mode but hesitates on full power), coil packs, fuel pumps, and spark plug wires. Code 61 is telling me I have a secondary issue but it could be anything in the whole secondary system. OOh btw I do not have a vacuum leak, and the pump does run and turn off.

mike100 · 05-07-2015

hook an actual vacuum gauge to tube that goes to the under ecm map sensor for the secondaries. You should get a constant 13 inches of vacuum when you floor it if there isn't a massive vacuum leak somewhere else.

you may have to force the secondary vac solenoid to turn on if it won't activate due to restriction in the ecm with the fault...or clear the code and drive it once.

Johnny5 · 05-12-2015

I am going to follow marc heibecks procedure and ground that part in back of the ECM. if the secondaries don't open......it has to be the solenoid, in which case i will have to buy jerrys and alter it or buy a new/used one off a member.

05-05-2015	#11
Johnny5 Join Date: Nov 2014 Location: New Jersey Posts: 363	Re: Engine code 61 help i replaced both fuel pumps and checked the diff sensor under the ecm. The diff/map sensor is fine and the pumps are new. Still not opening the secondaries, hesitating and almost stopping at 5k rpm.

05-05-2015	#12
Johnny5 Join Date: Nov 2014 Location: New Jersey Posts: 363	Re: Engine code 61 help i did not clear the codes but 61 came up again.

05-05-2015	#13
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,195	Re: Engine code 61 help http://www.corvetteactioncenter.com/...diagnosis.html __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

05-05-2015	#14
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,195	Re: Engine code 61 help peek down between the runners on the plenum and see if the actuators are opening the secondaries.....flashlight might help __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

05-06-2015	#15
Johnny5 Join Date: Nov 2014 Location: New Jersey Posts: 363	Re: Engine code 61 help Hey lee that article states that secondaries wont open if any ECM codes are stored so i will clear them after work and pray thats it but i doubt it lol. Thanks. I used a paperclip to read the coded. Can they be cleared in a similar fashion?

05-06-2015	#17
Johnny5 Join Date: Nov 2014 Location: New Jersey Posts: 363	Re: Engine code 61 help Hey Paul. The code has disappeared but comes up when I plug the top right 2 pins with a paper clip. Will disconnecting the battery delete the codes from the ecm memory (as the light is not currently on)?

05-07-2015	#18
Johnny5 Join Date: Nov 2014 Location: New Jersey Posts: 363	Re: Engine code 61 help Disconnected the battery, replaced the MAP sensor as I found one very cheap and code 61 comes up for a second when flooring the gas. I pulled it after I took the car for a ride. Does anyone live close to NJ and have a Tech 1 that would be willing to help me diagnose this? I replaced the injectors (runs super smooth on regular mode but hesitates on full power), coil packs, fuel pumps, and spark plug wires. Code 61 is telling me I have a secondary issue but it could be anything in the whole secondary system. OOh btw I do not have a vacuum leak, and the pump does run and turn off.

05-07-2015	#19
mike100 Join Date: Feb 2011 Location: San Marcos CA Posts: 1,802	Re: Engine code 61 help hook an actual vacuum gauge to tube that goes to the under ecm map sensor for the secondaries. You should get a constant 13 inches of vacuum when you floor it if there isn't a massive vacuum leak somewhere else. you may have to force the secondary vac solenoid to turn on if it won't activate due to restriction in the ecm with the fault...or clear the code and drive it once.

05-12-2015	#20
Johnny5 Join Date: Nov 2014 Location: New Jersey Posts: 363	Re: Engine code 61 help I am going to follow marc heibecks procedure and ground that part in back of the ECM. if the secondaries don't open......it has to be the solenoid, in which case i will have to buy jerrys and alter it or buy a new/used one off a member.