is my ecm bad?
Thread Starter
|
Newbie
Joined: Aug 2013
Posts: 16
From: mayfield heights,OH
is my ecm bad?
hi im new to this sight. i have a 1984 camaro with the 2.8 v6 auto.
i finaly figured out how to scan codes and i
when i do codes 23,32, and 34 are shown. also when im driving the idle repeatedly lowers and raises what feels like 100 rpms(my model didnt come with a tach) and if i turn to hard the car will start to stall and die. sometimes coming back with being hard to start after this happens.if it helps my engine has 280000+ miles. so is it my ecm thats causing the problem or is it somthing else
i finaly figured out how to scan codes and i
when i do codes 23,32, and 34 are shown. also when im driving the idle repeatedly lowers and raises what feels like 100 rpms(my model didnt come with a tach) and if i turn to hard the car will start to stall and die. sometimes coming back with being hard to start after this happens.if it helps my engine has 280000+ miles. so is it my ecm thats causing the problem or is it somthing else
April 2011 ROTM
Joined: Mar 2009
Posts: 22,015
From: Tokeland, Washington
ROTM Winner's Club
im not real up on these years so here you go.
34
Vacuum
sensor circuit
(1982 to 1984 vehicles)
Faulty
or loose wiring and/or connections at the ECM (Terminals 20, 21 and
22)
Faulty
vacuum sensor wiring and/or connections.
Faulty
vacuum sensor.
32
Baro
sensor circuit
(1982 to 1984 vehicles)
Short
between sensor terminals B and C or faulty wiring therein.
Faulty
or loose wiring and/or connections at the ECM (Terminals 1, 21 and
22).
Faulty
Baro sensor
23
Mixture
control (M/C) solenoid circuit
(1982 to 1984 vehicles)
Faulty
or loose wiring and/or connections at the M/C solenoid and/or at the
ECM.
Faulty
M/C solenoid.
34
Vacuum
sensor circuit
(1982 to 1984 vehicles)
Faulty
or loose wiring and/or connections at the ECM (Terminals 20, 21 and
22)
Faulty
vacuum sensor wiring and/or connections.
Faulty
vacuum sensor.
32
Baro
sensor circuit
(1982 to 1984 vehicles)
Short
between sensor terminals B and C or faulty wiring therein.
Faulty
or loose wiring and/or connections at the ECM (Terminals 1, 21 and
22).
Faulty
Baro sensor
23
Mixture
control (M/C) solenoid circuit
(1982 to 1984 vehicles)
Faulty
or loose wiring and/or connections at the M/C solenoid and/or at the
ECM.
Faulty
M/C solenoid.
Senior Moderator
January 2010 ROTM Winner
January 2010 ROTM Winner
Joined: Oct 2007
Posts: 18,306
From: The 'Burbs of Chicago
23 - Intake temperature sensor error. Check to make sure the sensor is there, clean it, and make sure it's plugged in.
32 - EGR system failure. Check the EGR valve to make sure the vacuum hose is connected. Remove the valve and check for carbon buildup. Clean inside it well while it's off.
34 - MAP sensor circuit error (signal low indicating high vacuum). Check any related (connected), and unrelated vacuum hoses in the engine compartment. You could have a vacuum leak.
Those are the simple, first things to check. Given some of the related connections between 32 & 34, I wouldn't be surprised if you had a vacuum leak.
32 - EGR system failure. Check the EGR valve to make sure the vacuum hose is connected. Remove the valve and check for carbon buildup. Clean inside it well while it's off.
34 - MAP sensor circuit error (signal low indicating high vacuum). Check any related (connected), and unrelated vacuum hoses in the engine compartment. You could have a vacuum leak.
Those are the simple, first things to check. Given some of the related connections between 32 & 34, I wouldn't be surprised if you had a vacuum leak.
