Q: Weak startup when the engine is warmed up - 2000 Toyota MR2

asked by on

When I start the car after it's been sitting for a while and the engine is cold, I have no problems at all. It starts and runs great. However, If I drive it for a while and then stop it, the car would crank fine when I attempt to turn it on, but it would barely start. I have no other issues with it besides this weak startup when the engine is warmed up. What could be causing this?

Hey there. Heat causes electrical resistance to increase. Given the age of the vehicle, your ignition system might be "struggling." You should thoroughly evaluate the ignition system. If that checks out, check the fuel pump output and condition of the fuel injectors. You may also have electrical concerns since the injectors have coils in them. For example, you could have a combination of physically plugged injectors and electrical issues occurring at the same time. If you need to have this problem scoped out, a certified professional from YourMechanic can come to your car’s location to diagnose the hard start and follow through with needed repairs.

Was this answer helpful?
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. Weak startup when the engine is warmed up - 2000 Toyota MR2

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: Stalls while accelerating fast

Hello. It is possible that your passing maneuver fooled the Traction Control system enough to de-rate the turbocharger until you restarted the engine. Try turning the traction control off - it will severely limit power if triggered. Later model Sprinters...

Q: Bought a MR2 roadster that has the Sequential Manual Transmission (bought it as a non driver) Toyota MR2

Hi there - the first task is to get stored problem codes - which may require a Toyota-specific code reader to get the level of diagnostic needed. Sequential Manual Transmissions are very sophisticated, computer-managed units, and very dependent on the...

Q: F20B engine felt and sounded like it scraped against something while driving. Now the car cranks but won't start.

The scraping noise was the timing belt rubbing on the timing cover. The issue could be the timing belt may have jumped a tooth. This will cause the engine to have a no start condition. Check the timing on the...

Related articles

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...
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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...