Q: Red triangle with exclamation, car not picking speed and makes rattling noise upon acceleration

asked by on

Red triangle with exclamation. Car not picking speed and makes a rattling noise upon acceleration.

My car has 362000 miles.
My car has an automatic transmission.

Hello. A red triangle with an exclamation point can be displayed for a range of different reasons. One of the most common causes is low engine oil. I would check the engine’s oil level to make sure that it is not low as this could set off the warning light, as well as cause potential damage to the engine. If the message is displayed and engine performance seems to be negatively affected then it may be possible that the issues are engine management or fuel system related. Perhaps a bad fuel pump or engine management sensor are starving the engine for fuel and setting off the warning. Retrieving the trouble codes would likely shed some light on what the issue could be. Closely examining the engine while it is running could help determine where the rattling noise might be coming from, and if it is related to the performance issues. If you are unsure, I would recommend having a professional technician, such as one from YourMechanic, visit your location to diagnose what may be causing your issues.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. Red triangle with exclamation, car not picking speed and makes rattling noise upon acceleration

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: System too lean bank 1

Hi There, Typically, a lean fuel condition will produce DTC code P0171, which indicates a lean fuel condition often times associated with "bank 1 or 2 too lean" as you have indicated. A number of things may cause code P0171...

Q: Can I disable the backup beeping on my Prius?

Spencer

Q: I replaced my camshaft and crankshaft sensor for my 2009 Saturn Outlook. I'm still seeing p0017 code. What could be the problem?

Diagnostic Trouble Code P0017 has many causes other than a failed position sensor. For example, the valve timing could be off if the timing chain has jumped, there could be oil flow problems to the phaser from incorrect oil viscosity...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.