Skip the auto shop - Our mechanics make house calls

Q: starts up great...as soon as it warms up in about 8-10 mins it will stall. Must cool down before it can start again.

asked by on

2005 Mazda RX8, 1.3 engine, automatic...about 100,000 miles... So many parts have been recently changed hoping to solve stalling problem. The problem is very consistent...will stall every time. After starting car, it revs great, idles smooth, no miss-fires...and when it warms and rpms drop down to 800-900 it'll get ready to stall soon. I can have it stay on longer by holding up the rpms...but it has stalled even holding the rpms up.

My guess, when something in the engine gets hot (normal operating temp) it seems to be giving the computer wrong information... Now, I know the "throttle body" is electronic and I see coolant lines passing through it...?? And, the BAP (Barometric Air Pressure) is still original... Any known familiar experiences?? Please help me...I don't have the money to just drop it off at the Mazda dealer.

Recent parts replaced: Upstream 02 sensor, spark plugs, ignition coils, air filter, engine coolant temp sensor, replaced any and all vacuum lines.

My car has 100000 miles.
My car has an automatic transmission.

A: Hi there: In most cases, the issue you’re ...

Hi there:

In most cases, the issue you’re describing is caused by a fuel and air mixture issue that is caused by either the idle control valve, EGR valve or the mass airflow sensor on your 2005 Mazda RX8. As the engine warms, the ECU receives data from multiple sensors and adjusts fuel / air trim to ensure it’s as efficient as possible. Any of the above components may be sending inaccurate data to the ECU as you’ve indicated. The best way to know for certain is to let the mechanic come to you. Contact a professional mobile mechanic from our team to complete a car is stalling inspection. This will save you money and time in trying to diagnose the problem, so the right repairs can be made.

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

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: I saw this car, and the owner is selling it,

Vehicles that were badly wrecked will usually get a salvage title, which means the vehicle damage was estimated to be more than roughly 70% of the value of the vehicle. Also, from personal experience, anyone with a salvage title car...

Q: Had belt, alternator, and battery checked. Car not starting.

The Mazda RX-8 is a particular favorite of mine, which may be due to the fact that I did own it at one point, making me very familiar with the function of this vehicle. If indeed the starter is the...

Q: My car will go into gear. But when I try taking off it won't go

Hi there. Typically on a manual transmission, this is an indication of a clutch malfunction. Since there are multiple components that comprise the clutch system on a modern car, I would recommend having a professional mechanic complete a car does...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.