2 cylinders misfiring
#1
2 cylinders misfiring
I have a 2000 Pontiac Grand Am GT 2.4L with 4 cylinders. I took my car to the shop after realizing that it was not picking up speed when i got on the highway. The car would accelerate as I pressed on the gas but it would just not move. The shop said I had a misfire in cylinders 2 & 4. They recommended me to get a new coil pack, module, and spark plugs. Is this going to solve the problem because I really do not want to pay and the car is still acting up! Please help.
Also please respond immediately I am trying to get the car fixed by next friday!
Also please respond immediately I am trying to get the car fixed by next friday!
#2
Retired
He seems to be right, but a coil pack AND module? I say replace the coil pack first. If that doesn't fix it, then go ahead and replace the module.
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Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
#4
Senior Member
True Car Nut
You have two ignition coils ... one feeds cylinders 1 and 4 and the other feeds 2 and 3. With it misfiring on 2 and 4 chances are the problem is not an ignition coil (unless both are bad). When is the last time you changed plugs and wires? I would start with the basics of changing plugs and wires (if they have not been changed in a while) and see if that fixes the problem.
Here is a nice write up explaining how to test the ignition module:
http://easyautodiagnostics.com/ign_q...r_module_1.php
and the coils:
http://easyautodiagnostics.com/quad_...est_quad_1.php
Here is a nice write up explaining how to test the ignition module:
http://easyautodiagnostics.com/ign_q...r_module_1.php
and the coils:
http://easyautodiagnostics.com/quad_...est_quad_1.php
#5
You have two ignition coils ... one feeds cylinders 1 and 4 and the other feeds 2 and 3. With it misfiring on 2 and 4 chances are the problem is not an ignition coil (unless both are bad). When is the last time you changed plugs and wires? I would start with the basics of changing plugs and wires (if they have not been changed in a while) and see if that fixes the problem.
Here is a nice write up explaining how to test the ignition module:
Part 1 -Ignition Module Test, Crank Sensor Test: GM 2.4L
and the coils:
Part 1 -Ignition Coil Test: GM 2.4L Quad 4.
Here is a nice write up explaining how to test the ignition module:
Part 1 -Ignition Module Test, Crank Sensor Test: GM 2.4L
and the coils:
Part 1 -Ignition Coil Test: GM 2.4L Quad 4.
Well I have had the car since May and I don't think that they have been changed in a while, so you don't think getting the parts they recommended will solve the problem of it not getting speed?
#6
Senior Member
True Car Nut
The parts they suggested could very well be the problem, but if my car was misfiring and the plugs and wires had not been changed in a while, I would start there. Also, if it was a 1/4 misfire, or a 2/3 misfire I would suspect a coil. A 2/4 misfire makes me think it is something else.
Did the shop check fuel pressure?
Did the shop check fuel pressure?
#7
The parts they suggested could very well be the problem, but if my car was misfiring and the plugs and wires had not been changed in a while, I would start there. Also, if it was a 1/4 misfire, or a 2/3 misfire I would suspect a coil. A 2/4 misfire makes me think it is something else.
Did the shop check fuel pressure?
Did the shop check fuel pressure?
#8
Senior Member
Posts like a Supercharger
Dont worry about the traction code, which is likely a bad connection or sensor. I would check the plugs first, then wires, then module. The 2/4 does seem like a non-coil pack problem. Also, ask them for the codes list, and maybe someone here can given you more help.
#9
Okay I will post it tomorrow I am going there for them to rescan and possibly give me a price on fixing
#10
The codes they have were p0300 p1137 and p0741