Car running extremely lean
06-14-2007, 02:15 PM
#1
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Car running extremely lean
I was just cruising at like 3000 RPM the other day. I stopped at a red light, it turned green, I rolled the car and I realized that they car sounds really weird. It sounds just like a Subaru (boxer engine). it is not accelerating as it normally does and the A/F is ranging between 16-17
We thought it might be the coil failure so I tested it by unplugging them when the car is at idle. One (the one close to the front of the car) did not do anything when I unplugged it. For the other 3, the car acted as if it was losing power. So there was definitely something wrong with #1.
To test if it is the coil or not, I switched the #1 coil with #2 to see if the problem will switch but it was still at #1. So there was nothing wrong with the coil.
We though it might be the spark plug. I changed the plugs and the problem was still there.
We though it might be the injector so I switched the #1 injector with #2, the problem was still at #1.
Tonight, I will try to switch the inector plugs to check if it is a plug failure. But I doubt that it'll work
What else can it be?? Anybody had any problem like this?
PS: I don't hear any loud knocking, nor I see any white smoke coming out of the exhaust.
We thought it might be the coil failure so I tested it by unplugging them when the car is at idle. One (the one close to the front of the car) did not do anything when I unplugged it. For the other 3, the car acted as if it was losing power. So there was definitely something wrong with #1.
To test if it is the coil or not, I switched the #1 coil with #2 to see if the problem will switch but it was still at #1. So there was nothing wrong with the coil.
We though it might be the spark plug. I changed the plugs and the problem was still there.
We though it might be the injector so I switched the #1 injector with #2, the problem was still at #1.
Tonight, I will try to switch the inector plugs to check if it is a plug failure. But I doubt that it'll work
What else can it be?? Anybody had any problem like this?
PS: I don't hear any loud knocking, nor I see any white smoke coming out of the exhaust.
06-14-2007, 05:39 PM
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had the exact same problem not too long ago. The car felt exactly like a Boxer engine and you could feel the whole car shake at idle. Ya and I pulled the coil thinking it could be the number 1 coil but wasnt. Solution... The electrical tape around the injector clips came undone and the wires had undone them selfves and was causing missfire. Take a look and see if that is what happened.
-Chris
-Chris
06-14-2007, 05:42 PM
#6
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Originally Posted by Chris@inlinePRO,Jun 14 2007, 05:39 PM
had the exact same problem not too long ago. The car felt exactly like a Boxer engine and you could feel the whole car shake at idle. Ya and I pulled the coil thinking it could be the number 1 coil but wasnt. Solution... The electrical tape around the injector clips came undone and the wires had undone them selfves and was causing missfire. Take a look and see if that is what happened.
-Chris
-Chris
06-14-2007, 05:54 PM
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Originally Posted by ChefJ,Jun 14 2007, 08:42 PM
I also had this happen on my #3 cylinder. It did throw a misfire code and the CEL was of the blinking kind. Something you should notice.
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06-14-2007, 06:00 PM
#8
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Thats why I don't really regret going with the blue box sometimes. I bought an OBDII scanner just so that I can pull whatever code may go off. It helps alot in this type of situation. If only AEM could custom make a EMS that was intelligent enough to know what is good and bad.
06-14-2007, 06:56 PM
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Originally Posted by Chris@inlinePRO,Jun 14 2007, 08:39 PM
had the exact same problem not too long ago. The car felt exactly like a Boxer engine and you could feel the whole car shake at idle. Ya and I pulled the coil thinking it could be the number 1 coil but wasnt. Solution... The electrical tape around the injector clips came undone and the wires had undone them selfves and was causing missfire. Take a look and see if that is what happened.
-Chris
-Chris
anyways, you think if i switch the plugs with #1 and #2, it would switch the problem to #2 right?
06-14-2007, 06:58 PM
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Originally Posted by Chris@inlinePRO,Jun 14 2007, 08:39 PM
had the exact same problem not too long ago. The car felt exactly like a Boxer engine and you could feel the whole car shake at idle. Ya and I pulled the coil thinking it could be the number 1 coil but wasnt. Solution... The electrical tape around the injector clips came undone and the wires had undone them selfves and was causing missfire. Take a look and see if that is what happened.
-Chris
-Chris