I have an engine miss...Please Help!!
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I have an engine miss...Please Help!!
So, I have a 1998 Dodge Ram 1500 with the 5.9L V8. About a month ago, I had to have the engine replaced due to a bent valve, so I have a grooms reman in now. When I had the engine put in at first, it ran like crap knocking upon deceleration with any throttle imput. I took that to dodge, and they replaced the crank position sensor, and reset the sync signal for the fuel injection. The engine ran better, but still has a slight miss. It idles pretty rough, all be it within 100 rpm, and at cruise speeds, every few seconds, misses. Its not a dead miss, but just a slight one. Its almost unnoticeable unless you listen to the exaust. I have replaced the upstream oxygen sensor, checked my PCV valve, and it sucks and whistles. I have also checked hoses for vacuum leaks, checked it IAC and the MAP sensors. I even opened the oil cap, and placed my hand over the hole with the vehicle running to check for a bad plenum gasket. All seem to be working fine. I have pretty much exhausted all of my ideas. Any ideas on what this could be? I have read around and some articles say it could be a bad downstream 02 sensor or a clogged catalytic converter, or even injectors not aligned 90 degrees to the rail. What should I try next?
Thank you soo much for your help,
Bryan Omohundro
Thank you soo much for your help,
Bryan Omohundro
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