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I did a tune up 4 month ago my venture 2001 is start to shake on neutral or when I press the brakes on a stop the engine light comes and go and the shakes disappear can you tell me what it could be
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code p 300 is random misfires
code p 0301,-2,-3,-4,-5,-6,-7,-8 all refer to the cylinder that is misfiring ie p 0303 is no 3cyl misfiring
many people mistakenly believe that a misfire is from the plug, wires distributor when in fact it is more likely to be a problem injector ---dirty tip , low fuel; pressure , blocked tip, injector wiring
using gas conditioner sometimes works but in many cases it dislodges gunk that blocks the tip
At this point I would get a fuel pressure test done to check the pressure regulator , pump and filter condition as everything you describe points to fuel and injectors
AS a point of interest- with ECM controlled engines, the ECM tunes up the engine 60 times a minute to keep it within parameters and the plugs will last the life of the engine
when you want to do a tune up , simply have the fault codes read and fix only what comes up
CHECK TURN SIGNAL FUSE.IT COULD BE BLOWED OR YOU HAVE FAULTY TURN SIGNAL SWITCH.BECAUSE BACK LIGHTS AND TAIL LIGHTS SHARE SAME CIRCUIT WITH TURN SIGNAL SWITCH.
CHECK & MAKE SURE THAT NONE OF THE PLUG WIRES HAVE COME OFF ON THE DISTRIBUTOR CAP,OR THE PLUGS,ALSO MAKE SURE NONE OF THEM ARE ARKING ANYWHERE,TRY THAT AND WRITE BACK IF THATS NOT THE PROBLEM.
It sounds like a wheel sensor is failing, this will trip the ABS and cause the brakes to feel a bit weird. You will need to press the brake harder to stop if the ABS getts tripped.
The blocking bracket might be jammed. Stop the engine, nudge the car a little and try again to move the lever without pressing the brake pedal.
If this works move the lever several times to loosen the bracket, leave it in neutral, press the brake pedal and start the engine. Leave it running at idle for a while , till the oil heats up - 5-10 minutes , depending how cold is outside. Then repeat the lever movement till the efort becomes neglijable. If it doesn't or jams again take the car to the repair shop, it needs tinkering.
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