Either timing belt and pulleys or distributor... had to replace both on mine and the coils were shorting out and so were the wires.
my 1990 300zx is idling rough what could cause this?
Possibly shocks are tired and slack and are banging, they'd need changing if that were the case and your steering would be affected, if your control of the car is sound, then perhaps exhaust is rattling and just needs adjusting
I can't speak directly for a Toyota, but if you have a carberated system then you could be having problems with a leaking vacume hose or something in your EGR valve.
A 1988 Toyota Corolla might run well one day and rough another day because of temperature changes that cause the vehicle to have leaks in the seals or gaskets. This might also be due to bad gasoline purchased the second day or even water in the gasoline. A clogged fuel filter might even cause this issue.
the radiotor or the cams
There are several things that can cause your 1993 Nissan 300 to idle rough. The most common cause is dirty spark plugs. Bad spark plug wires can also cause the problem.
A fouled spark plug or a loose spark plug wire can cause a rough idle and a loss of horsepower. It can also be caused by a dirty air filter.
There are several things that can cause your 2004 Chevrolet Trailblazer to idle rough. The most common causes are a dirty fuel filter or a dirty air filter.
A short circuit.
Fuses
no it will not...
witch lights