I had those symptoms and finally had the dealer look at it. the problem was with my cooling system and temp sensor. the car was running hotter than the temp sensor was indicating and the cooling system was not working properly.
EGR should turn on Service Engine light on 96 and later. The tube / pipe to the exhaust manifold can also become blocked. EGR could cause rough engine. Many other possibilities.
A bad throttle position sensor, on your 1991 Saturn, will cause the engine to run rough when it is idling. The engine will run normally at higher speeds.
with the info you gave it can be anything prob needs a tune up but just guessing since I have no info
Poor performance, poor fuel mileage, hesitation, rough idle,
Biggest problem I can think of is if they somehow make it past your air filter and get back to your throttle body. May cause rough idle, low idle, hesitation, etc. I would think it would take a lot of leaves to really cause a problem, though.
my 1990 300zx is idling rough what could cause this?
A timing chain, that needs to be replaced, can cause your engine to run rough and lose power. A broken timing chain can cause significant engine damage.
That would depend on what is wrong with the transmission. Repairing an A/T or a Manual transmission is a repair that requires skill, knowledge, and training, in other words a professional. Take it to a trusted independent or Saturn dealer. Avoid chain transmissions shops. As you don't state the problem, about all you can do yourself is change the fluid and filter if you have the skill to accomplish this. If you are experiencing rough shifting or hesitation, change the fluid and filter or have it done.
Because it is studded with ribosomes that cause it to be rough.
1.rough idle 2.hesitation when accelerating 3.wrong fuel/air mixture 4. high fuel compsumption
The temp guage could be faulty, where it has gone bad, or the heat sensor itself had gone bad unless the vehicle is actually getting hot. O2 sensor wont cause rough idling but it would cause these types of problems: * Surging and/or hesitation Poor or a decline in fuel econmy Failed exhaust emissions testing Premature failure of the catalytic converter (rotten egg smell) Indicator "idiot" check engine lights coming on
If an alternator is going bad it can cause a rough idle in a 1993 Subaru Legacy. Cold temperatures in the winter can also cause a rough idle in the Subaru Legacy.