Question about Honda Cars & Trucks
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Posted on Jan 02, 2017
try the "tap test" on the ecm. After closed loop,just lightly tap on the computer,you may see it change or stall.Mine did that and the ecm was bad.
Posted on Aug 21, 2009
WHEN ENGINE GOES CLOSED LOOP TO OPEN LOOP.YOU HAVE A RICH FUEL MIXTURE.YOU HAVE A VACUUM LEAK.BY YOU HAVING ROUGH IDLING.AND A HIGH MILEAGE ENGINE I WOULD DO A COMPRESSION TEST OR CYLINDER LEAK DOWN. CHECK FOR LEAKING VALVES AND LOW COMPRESSION .THEY BOTH WILL CAUSE ENGINE TO IDLE ROUGH CAUSE MISFIRE.CAUSE OPEN LOOP CONTAMINATE HO2 SENSOR CAUSE A RICH FUEL MIXTURE.
Posted on Sep 30, 2009
Your problem may have nothing to do with your car sitting at the repair shop for a while. You said your car was hit hard in rear. A jolt like that sends a shock through the whole car. It's the weakest link scenario. What may have been ready to go, went due to the jolt. It could have been any other sensor, but it was your o2 sensor. If you talk to your insurance company, they will tell you replacement will be under your insurance betterment clause, which will cost you anyway, check your policy. I know this is a crock. I believe your problem will be solved when o2 sensor is repaired. This is connected with ECO. GOOD LUCK FRIEND
Posted on Sep 15, 2014
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