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P1399 honda odyssey 20038/25/2023 Basic Hands on check first, found one coil unplugged. MAP Sensor reading steadily climbs as engine starts to stall. Stalls at times during consecutive snap throttle tests while engine falls to idle. Creating a very very slight shutter to the point you can't even really feel it.Ģ. Very Light Misfire at idle and under load. I don't know if the engine run without misfires after the previous work was done.ġ. Sometimes it will give specific 4 specific cylinders but it seems the cylinders it gives, changes from time to time after erasing the codes. The vehicle is now back with a random misfire once again. Previously 1 month ago, 3 Coils and 6 Spark Plugs were replaced at our shop before I was employed there due to random misfires. Waekon AutoWave 1ch Scope (Personal Scope) Old Snap on MODIS w/ 4Ch Scope (Shop Scope) No amp probe I have done a bunch of diag on it and I'm getting stumped. Came in due to a P1399 Misfire and 1 dead miss. I appreciate your feedback.I have in our shop a 2002 Honda Odyssey with 148K miles on it. I apologize for the long post, but wanted to offer sufficient information to describe the problem and history. The technician indicated it might be a computer problem. The technicians attempted to reset it, but it would come back on after about 5 minutes of driving. Starting in 2001, I had noticed that the Maintenance Light would come on and stay on. The report indicated that the car is misfiring on all cylinders (with codes P0301, P0302, P0303, P0304, P0305, P0306). Today, I took my car for the emissions test, and it failed. The noise can best be described as the sound when something breaks off of something else. However, this noise now comes on regularly when backing and turning (but at no other time), and I hear it exactly once. At first I thought that I ran into a pot hole or something. Recently, I have started hearing a noise when backing up and turning the car (such as out of the driveway) that sounds like something hit the car from under the car. The TCS light still stays on after 5 minutes of driving, most of the time.) However, this behavior is not consistent. Starting in June 2007, I noticed that every now and then, the TCS light now goes off after a while. Since there have been no other issues with the car's performance, I did not go back to the dealer. After charging me about $150, they suggested I spend another $150 for additional tests. I took it back to the dealer, and they performed a battery of tests and indicated that they could not find anything wrong with it. Both the Check Engine light and TCS light indicate the original symptoms.) They ran two cans of Top Engine Cleaner through the car, then test drove the car for 10 miles, and determined that the vehicle was running OK.Ībout 2 weeks later, the problem re-occurred. The David Hobbs Honda dealership diagnosed the problem as P0301 and P0305, and called it random misfires. I have only experienced it about 5-7 times in the past 8 months. However, the hesitation in starting up is occasional. (The TCS light would take a little less time to come on and stay ON, when I start the car after the car has been stopped for less than an hour.) I also noticed that the car took a second longer to start-up, but once it started, everything appeared fine. In addition, the TCS light would come on and stay on after about 5 minutes of driving. Starting in November 2006, the Check Engine Light would come on and stay on, once the car is started up. The car is misfiring on all 6 cylinders (P0301-P0306) the check engine light stays ON after the car has started the TCS light comes on and stays on after 5 minutes of driving. That solved the problems with the Check Engine light and TCS lightĦ6,000 miles automatic transmission 2 wheel drive Honda had extended warranty on that, and the technician replaced the kit for free.
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