Skip the auto shop - Our mechanics make house calls

Q: Car idles rough when stopped at light or stop sign (not all the time). Car overheated very briefly.

asked by on

2001 nissan altima overheated briefly last week (as soon as temp went high, check engine light came on for coolant ), vehicle was stopped. Radiator was checked and it was pretty empty. After radiator cooled down water was added and temperature gauge stayed normal. Radiator rusty so radiator flush done. Coolant still seems to have a small leak but not sure where. Due to high mileage and not sure when spark plugs/distributor cap/rotor and wires were changed those are being done this week. Check engine light just came on it was P303 for cylinder 3 misfire. Now with doing some research online it looks like the Nissan Altimas are known to need to have intact manifold gaskets replaced. How can you tell if it is the intact manifold gasket ? Also they say it is best to change both gaskets, is that true ? The car is not giving off any white smoke and the engine temperature is staying right in the middle range, it hasn't overheated again.

My car has 205000 miles.
My car has an automatic transmission.

Its possible that a bad gasket could be allowing the coolant to cause your misfire. There are many places that coolant can leak and many causes for a misfire like yours. The symptoms you describe may not be related to each other. I would have a certified technician, like one from YourMechanic, come to the site of the car to diagnose the rough idling issue as well as the overheating problem in order to prevent further damage from occurring.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Car idles rough when stopped at light or stop sign (not all the time). Car overheated very briefly.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Leakage on my transmission? 2008 Cadillac CTS

Hi there - check all your fluid levels, but check your engine coolant level most closely. The coolant GM uses for your engine (Dexcool) is, in fact, orange - not pink as most transmission fluids. Engine coolant will evaporate, not...

Q: I have a 99 tahoe and yesterday i had a leak i looked and seen my heater hose was shooting out antifreeze and shortly after my car

The computer may sense the vehicle is overheating or the coolant is leaking and causing the engine to go into failure mode. Have the coolant leak fixed and check and document all codes. Then have the codes cleared to verify...

Q: What kind of sealant if any do i need for the oil filter adapter gasket

I would not recommend using any sealer other than Ultra Grey by Permatex. When you remove the housing if you have a paper type gasket use the sealer, but if the gasket is a rubber o-ring then do not use...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...