Vacuum leak, bad spark plugs, plug wires, or all three. Replace all vacuum hoses, plugs and plug wires. Replace the hoses one at a time so as to not get confused.
One of the reasons for a 2003 Nissan Sentra to run rough and stall out when it comes to stop is a bad oxygen sensor. Another cause for the running rough could also be a dirty air cleaner.
I have an 05 sentra that shifts rough from 1rst to 2nd, especially when cold. You find any answers? thanks, Brian brewnut@hotmail.com
Check your spark plugs and fuel filter.
Rough idle, loss of power, poor mileage.
injectors are a common problem
the check engine light is blinking and my 03 Nissan exterra is running rough
On the 1.6 litre Sentra engines you should not have to change a timing chain until well over 250,000 miles if ever. This engine has an automatic chain tensioner that keeps the chain tight so that it will not jump teeth when stretched due to wear. I have heard of early 90s engines developing gear tooth cupping that prevents the engine from retaining proper ignition timing. This causes the engine to run a little rough. I have never SEEN this though.
why does my vr commodore idle rough when at complete stop
if the car is running rough or if plugs are in poor condition
vacuum leak
cause he is stupid
The EGR valve or the Knock Sensor could be the problem here. Repairs run about $500.00 at a shop or do it yourself for about $250.00