Help!! P0300, P0302, P0305, P0306, P0307, P0308, P1316
#1
Help!! P0300, P0302, P0305, P0306, P0307, P0308, P1316
00 XKR
Had just washed it then went to fill up the gas tank, noticed while at the gas station a little bit of smoke coming from right underneath the driver side coils. Not inside the plastic cover where the coils sit but a little bit further down. It stopped after a few seconds so I figured I just got a little water in there from using the pressure washer. Drove it for 2 hours after that with no problems, no smoke at idle, no smoke while driving, no check engine light, no restricted peformance. Today I go to start it, it is idling horribly and I'm receiving all of these codes P0300, P0302, P0305, P0306, P0307, P0308, P1316. To top it all off I'm on vacation so it looks like I'm going to have to get it towed...
What should I try/look for first?
Please help!
Had just washed it then went to fill up the gas tank, noticed while at the gas station a little bit of smoke coming from right underneath the driver side coils. Not inside the plastic cover where the coils sit but a little bit further down. It stopped after a few seconds so I figured I just got a little water in there from using the pressure washer. Drove it for 2 hours after that with no problems, no smoke at idle, no smoke while driving, no check engine light, no restricted peformance. Today I go to start it, it is idling horribly and I'm receiving all of these codes P0300, P0302, P0305, P0306, P0307, P0308, P1316. To top it all off I'm on vacation so it looks like I'm going to have to get it towed...
What should I try/look for first?
Please help!
#2
There may be water that has gotten under the coil cover. You may need to remove that cover and drive it for a while. I seem to recall another member that had a quite of a time getting it all dry under there. You would think with engine heat it wouldn't be an issue, but I guess it is. The one thing that makes me think there may be more to this though, is that you are getting misfires on both banks. I suppose you could have water under both covers.
#3
There may be water that has gotten under the coil cover. You may need to remove that cover and drive it for a while. I seem to recall another member that had a quite of a time getting it all dry under there. You would think with engine heat it wouldn't be an issue, but I guess it is. The one thing that makes me think there may be more to this though, is that you are getting misfires on both banks. I suppose you could have water under both covers.
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I cleaned the coils and put them back in. Then I cleared the codes, after running a minute I have p0300 and p1316. Should I let it run longer to try get it to tell me which cylinders?
#7
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The LTFT's are both around 9, STFT1 says "-", STFT2 says "0" at idle and 2500rpm. The engine is about half way to operating temperate but I'm pretty sure those readings aren't normal. Do you think this means I probably have a ECU problem?
Last edited by seawind; 05-21-2015 at 03:38 PM.
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#12
The vacuum hose did fall of the fuel pressure regulator! I reattached it but still have the same issue. Could it falling off have damaged something else? I haven't been able to reseat the relays/fuses because it started pouring down.
#13
The weather let up for a moment... I reseated the relays in the ECU compartment I also checked and reseated the fuses. They all looked good and were dry. While I was at it I reset the ECU, with the key out of the ignition I disconnected the negative cable and held it to the positive for about 30 seconds.
Started it up, still the same rough idle, after about 2 minutes the restricted peformance/check engine light and all the misfire codes came back.
Started it up, still the same rough idle, after about 2 minutes the restricted peformance/check engine light and all the misfire codes came back.
Last edited by seawind; 05-21-2015 at 07:07 PM.
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Thought of something, there is no way this should cause any problems but right before the problem started I did check the oil and coolant. The coolant level was good. The oil was also good, looked like it may have lost a little bit on the drive.
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Gus (05-21-2015)
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If you wash you engine with a power wash and you have not had an issue by now you are doing it on borrowed time. I can introduce to many friends who had to replace the engine ECM and other things for doing the same thing.
I've always washed the car with a pressure washer and have never had any problems. I washed it yesterday morning and drove it for 2-3 hours after I washed it with no problems. All the relays in the ECU compartment are dry. The entire engine looks dry. I also pulled all the coils on bank 2 and they were dry.
Thought of something, there is no way this should cause any problems but right before the problem started I did check the oil and coolant. The coolant level was good. The oil was also good, looked like it may have lost a little bit on the drive.
Thought of something, there is no way this should cause any problems but right before the problem started I did check the oil and coolant. The coolant level was good. The oil was also good, looked like it may have lost a little bit on the drive.
#20