Code 61? Secondary port throttle valve system
Thread Starter
Cruising
Joined: Jun 2013
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Code 61? Secondary port throttle valve system
Been pulling out what's left of the hair on my head troubleshooting a stall/won't start scenerio. I've had the car run great for a few miles and die. Turns over but won't start. A few days later I go out there and it starts. Today I was ready to read the codes. Course it started. I raced it up a few times and the car died. Won't start. I am getting a code 61 from the ECM but for the life of me I can't find much on this nor can I find any vacuum mechanism on the passenger side?
Do the symptoms even match a code 61?
BTW I have a VATS bypass in it now so that shouldn't be the issue.
BTW 1993 Anniv Edition. 93k. Never seen a winter. Comes with lots of goodies like an anniv shirt, watch, poster, shop manual, orig invoice laminated, two orig owners manuals, car cover, Corsa stainless exhaust and zr1 wheels. 6 speed. Nice car but I need to get it running and sell it. Too many toys.
Do the symptoms even match a code 61?
BTW I have a VATS bypass in it now so that shouldn't be the issue.
BTW 1993 Anniv Edition. 93k. Never seen a winter. Comes with lots of goodies like an anniv shirt, watch, poster, shop manual, orig invoice laminated, two orig owners manuals, car cover, Corsa stainless exhaust and zr1 wheels. 6 speed. Nice car but I need to get it running and sell it. Too many toys.
Last edited by 68xlch; Jun 26, 2013 at 03:23 PM. Reason: adding year make and model
Thread Starter
Cruising
Joined: Jun 2013
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So I was looking at the zr1 codes. Off to a great start. Thanks for the correction.
I'll try cleaning the two I have but it doesn't make sense to me that it would be a VATS issue if I have the Eckler's VATS bypass unit installed. I did do it myself and it didn't change the symptoms.
I'll try cleaning the two I have but it doesn't make sense to me that it would be a VATS issue if I have the Eckler's VATS bypass unit installed. I did do it myself and it didn't change the symptoms.
Melting Slicks
Joined: Aug 1999
Posts: 2,240
Likes: 41
From: Baltimore, MD USA
There is no ecm code 61.
The explaination for a CCM code 61 was posted.
That probably occured if you messed with the bypass and
tried to start the car.
That code would prevent the starter from engaging.
Have you checked fuel pressure?
Have you pulled the fuel pressure regulator vacumm hose
and verified there is no gas in the hose?
When cranking have you verified there is spark to the plugs
when it doesn't start?
The explaination for a CCM code 61 was posted.
That probably occured if you messed with the bypass and
tried to start the car.
That code would prevent the starter from engaging.
Have you checked fuel pressure?
Have you pulled the fuel pressure regulator vacumm hose
and verified there is no gas in the hose?
When cranking have you verified there is spark to the plugs
when it doesn't start?
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Thread Starter
Cruising
Joined: Jun 2013
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I jumped pins A & B. It did exactly what I expected. It blinked the 12's and then 61. A&B jumped should be reading ECM codes not CCM. CCM I would have been jumping A & H no?
The car started today (again) and ran for 10 mins. It does this almost every time I go out to try it a few days later. I'll check the fuel pressure but it's so sporadic it really doens't make much sense.
The car started today (again) and ran for 10 mins. It does this almost every time I go out to try it a few days later. I'll check the fuel pressure but it's so sporadic it really doens't make much sense.
Melting Slicks
Joined: Aug 1999
Posts: 2,240
Likes: 41
From: Baltimore, MD USA
Problem is for a 1993 lt1 vin P there is no ECM code 61.
You must be counting the pulses incorrectly.
If you were to short pin A to Pin G turn the ignition On
The codes will be displayed in the dash LCD.
Module 1 CCM
Module 4 ECM
Melting Slicks
Joined: Aug 1999
Posts: 2,240
Likes: 41
From: Baltimore, MD USA
Thread Starter
Cruising
Joined: Jun 2013
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I don't think you are following what I am trying to explain. My connector only has one row of open female plugs. The bottom row is plugged up. So there is no way to jump A&G. I have 6 open pins on the top row only.
Melting Slicks
Joined: Aug 1999
Posts: 2,240
Likes: 41
From: Baltimore, MD USA
3 possible explainations.
1) You have an aftermarket wiring harness.
2) Bubba has worked on the car
3) Some one has removed the factory OBD 1 cover plug and
reinstalled it so the lower row of pins are blocked.
My guess is number 3
1) You have an aftermarket wiring harness.
2) Bubba has worked on the car
3) Some one has removed the factory OBD 1 cover plug and
reinstalled it so the lower row of pins are blocked.
My guess is number 3
Thread Starter
Cruising
Joined: Jun 2013
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My guess is Bubba sold me the damn car.
That plug has been used by my mechanic before to read the diags and it worked fine. I don't know why anyone would take the original out and go through the pain of putting something in that was not original but who knows. Guess I need to get it towed to him.
That plug has been used by my mechanic before to read the diags and it worked fine. I don't know why anyone would take the original out and go through the pain of putting something in that was not original but who knows. Guess I need to get it towed to him.
Melting Slicks
Joined: Aug 1999
Posts: 2,240
Likes: 41
From: Baltimore, MD USA
Can you post a picture of the connector?
On the back side of the connector are there any wires going
to any of the blocked off bottom row of pins?
If you look at the ECM located above the battery under the
hood does it look like this?
On the back side of the connector are there any wires going
to any of the blocked off bottom row of pins?
If you look at the ECM located above the battery under the
hood does it look like this?
