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: Engine Light and AT light. Car goes into limp mode

Hello. Most of the time this is the result of a transmission failure. It is common for this transmission to have internal pressure problem which will cause these codes. It can also be a voltage problem so I always check...

Q: Engine

Based on interchange data from Car-part.com, depending on whether you have a manual transmission or an automatic transmission, RX-8 engines from 2004 to 2007 will work in your vehicle. No other engines will work because any engine outside of that...

Q: Air conditioner not turning on

Hello. The most common cause of a sudden AC failure is low refrigerant. Over time, the refrigerant leaks out and the system stops working once it is low enough. I typically start by checking the pressure in the system to...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
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...