p0340 Camshaft Position Sensor "A" circuit (B1) ?
#1
p0340 Camshaft Position Sensor "A" circuit (B1) ?
So i installed GSC s3's in my Evo 9. After the install idled great, drove great, timing is good ect... when i went to get it remote tuned the car would fuel cut in anything under 3,500 RPM WOT then just hall ***. A/F are fine, Boost , ect..
So it fuel cut under 3,500 rpm i thought maybe the spark plugs are going and bought new ones. Well that was not the problem it did it again still fuel cut for a spit second anything under 3,500 RPM. My CEL came on and read the code listed in title "p0340"
I took it too the track to day first pass was nice went 11.2 @ 112 MPH "let off" The pass felt great. Second pass it felt great then when i got into 3rd gear a/f dropped down to 10.3 and felt like i lost 200hp or somthing aka ran a 13.5 LOL. I pull over after it is now idling at like 500RPM with a 0 vac at idle and it hard to even get it to start. when i drove above 3k a/f 14.7 ish, vac -10 / -14 AKA normal but would EAT GAS
WHEN I GO TO DRIVE IT NOW IT MISFIRES UNDER 3K but if im above 3k it drives normal but is eating gas 2x's quicker then normally and my friend following me said on top of the gun shot nosies it was making it was shooting huge flames
I replaced the Exhaust side Camshaft angle sensor no luck in fixing this problem. Now the evo 9 has a Mi-vec camshaft senser didnt replace that yet...
So back tracking. The car on STOCK CAMS worked perfect. Now with the s3's installed started with a fuel cut under 3.5k to now not drivable till over 3k. so after the tracked i really KOed something. any ideas of what might of been done wrong?
Does the Mi-vec camshaft trigger plate need to be timed? i no the exhaust camshaft trigger plate need to set correct but the intake camshaft trigger plate looks the same all around
So it fuel cut under 3,500 rpm i thought maybe the spark plugs are going and bought new ones. Well that was not the problem it did it again still fuel cut for a spit second anything under 3,500 RPM. My CEL came on and read the code listed in title "p0340"
I took it too the track to day first pass was nice went 11.2 @ 112 MPH "let off" The pass felt great. Second pass it felt great then when i got into 3rd gear a/f dropped down to 10.3 and felt like i lost 200hp or somthing aka ran a 13.5 LOL. I pull over after it is now idling at like 500RPM with a 0 vac at idle and it hard to even get it to start. when i drove above 3k a/f 14.7 ish, vac -10 / -14 AKA normal but would EAT GAS
WHEN I GO TO DRIVE IT NOW IT MISFIRES UNDER 3K but if im above 3k it drives normal but is eating gas 2x's quicker then normally and my friend following me said on top of the gun shot nosies it was making it was shooting huge flames
I replaced the Exhaust side Camshaft angle sensor no luck in fixing this problem. Now the evo 9 has a Mi-vec camshaft senser didnt replace that yet...
So back tracking. The car on STOCK CAMS worked perfect. Now with the s3's installed started with a fuel cut under 3.5k to now not drivable till over 3k. so after the tracked i really KOed something. any ideas of what might of been done wrong?
Does the Mi-vec camshaft trigger plate need to be timed? i no the exhaust camshaft trigger plate need to set correct but the intake camshaft trigger plate looks the same all around
Last edited by 5LEEPERISAH23I; Sep 22, 2012 at 05:42 PM.
#4
Evolving Member
iTrader: (6)
I just swapped cams on my IX. The position of the Exhaust CAS seems pretty easy to spot - at TDC the "large vane" should point down and to the right at a 45* angle, assuming you're looking directly into that end of the cam. The intake side seems much less obvious, to the point that I don't know if it has a true "correct position." I made sure both cams were oriented the same and that I put the sensor on the new cam exactly how I pulled it off the old one, but on a quick glance, I didn't see anything to indicate which way it should go. If nothing else, it should be easy to pull it off, flip it 180*, bolt it back up and take the car for a spin to see if the problem and the DTC disappear.
#5
Former Sponsor
iTrader: (31)
I just swapped cams on my IX. The position of the Exhaust CAS seems pretty easy to spot - at TDC the "large vane" should point down and to the right at a 45* angle, assuming you're looking directly into that end of the cam. The intake side seems much less obvious, to the point that I don't know if it has a true "correct position." I made sure both cams were oriented the same and that I put the sensor on the new cam exactly how I pulled it off the old one, but on a quick glance, I didn't see anything to indicate which way it should go. If nothing else, it should be easy to pull it off, flip it 180*, bolt it back up and take the car for a spin to see if the problem and the DTC disappear.
i will update with a fix so it helps others if they run into this issue.
#6
Also we did a commpression test, all Cylinders were with in 2 PSI Of each other we also did a leak down test all cylinders were leaking about 2% but that's like nothing IMO.
We did a boost leak test the throttle seals are shot very had. I'm replacing with the Mil-Spec 65mm throttle body, there was also a boost leak were the UICP and throttle meet T-Bolt wasn't holding but we fixed that leak.
We swaped Camshaft angle sensors from Toms car to mine. His car ran fine on my senser. My CEL say the intake senser is bad and Tom doesn't have that due to being a Evo 8.
So the car is still not fixed and is still idle n misfiring under 3,000 RPM. We're ordering the Camshaft (B1) senser this week due to the CEL say that is the problem and Tom doesn't have that senser on his car. Will keep updating
We did a boost leak test the throttle seals are shot very had. I'm replacing with the Mil-Spec 65mm throttle body, there was also a boost leak were the UICP and throttle meet T-Bolt wasn't holding but we fixed that leak.
We swaped Camshaft angle sensors from Toms car to mine. His car ran fine on my senser. My CEL say the intake senser is bad and Tom doesn't have that due to being a Evo 8.
So the car is still not fixed and is still idle n misfiring under 3,000 RPM. We're ordering the Camshaft (B1) senser this week due to the CEL say that is the problem and Tom doesn't have that senser on his car. Will keep updating
Last edited by 5LEEPERISAH23I; Sep 24, 2012 at 06:16 AM.
#7
Any updates on this ? I got the same code that came up I thought it was the plugs as well so I'll be changing that today but it seems like that won't solve this problem. I been witnessing the same problem that the car won't go past 4k with out breaking up. Sounds like a 2 step
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#8
Any updates on this ? I got the same code that came up I thought it was the plugs as well so I'll be changing that today but it seems like that won't solve this problem. I been witnessing the same problem that the car won't go past 4k with out breaking up. Sounds like a 2 step
FYI i changed my plugs and it did no good.
#14
do you have a video of what your car is doing? this happened to me tonight and code was for camshaft sensor bank 1. car cranks and turns over but doesnt start. i can tap the **** out of the gas peddle and itll turn and then just dies. im gonna try and replace my cam sensor tomorrow morning and see how it goes. car just died out of the blue and thats the code that popped up so im hoping its as simple as that.
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