Service engine light is on and codes that come up are Knock Sensor and EGR. Mechanic does not believe that they need replaced. Did have new fuel filter put in which was really needed. Still having some hesistation problems when acclerating going up hlls and sometimes idle rough. Did stall out at stop sign.
SOURCE: 1993 Infiniti J30 starts, but run really rough and then stalls
sounds like the guy has put the timing belt back together a tooth off have some one check this for you
SOURCE: Car doesn't accelrate well, gets worse when going up a hill
If the Check Engine light is on, then more than likely it is a problem with the ignition coils. I30's utilize coil packs instead of Plug Wires, Rotor and Cap system. I30's had a model exclusive issue with the Ignition coils. Usually, one would go bad, and not long after, the rest would go bad, one after another. In other words it would be like having fouled plugs, which you may have also, and would create the symptom you are describing. If the light is not on, the first thing I would do is have a tune up performed. Normally on that particular car, the tune up would involve, changing the plugs, air filter, pcv,valve, resetting the idle and timing via computer, cleaning the throttle chamber, and some places would even perform a BG fuel system cleaning procedure. This is recommended every 60K miles, So if it has been a while since it has been done, or never has, it definitely should be. You could have a bad buildup of residue in your injectors and your fuel system that could be leading to this problem. In cases like this you have to start somewhere, and being able to eliminate a tune up would be the best way to begin to figure this out.
SOURCE: dashboard light coming on after head gasket was fixed
You must read the codes to find out what it is. Get the manual 17 bucks autozone. Then read the codes and look up problem. The manual will tell you exactly how to read the codes, its real simple, you can do this. My guess is that there is a vacum leak. A simple test is to start the engine and spray a little intake manifold cleaner near different areas of the engine. listen carfully should you hear a change in rpm you have found the leak good luck.
SOURCE: 94 j-30 sometimes missing runs rough then 1 hour later runs fine
Check to see if your spark plug wires are not cracked or worn. They would make the engine run rough when cold or damp more often then when the engine drys up when warmed up- just an easy thing to check...
SOURCE: 1997 qx4 infinity
I would change the mass air flow meter firstly.If your knck sensor was the problem then you would have engine running rough.If its not causing any problems when driving then its safe to drive with the light on.
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