Hard Starting?

Tiny
BLESSING EWOBOR
  • MEMBER
  • 2004 TOYOTA COROLLA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 234,114 MILES
Hi, the vehicle is experiencing hard starting early in the morning, the vehicle has to be crank several times before it starts, whenever it starts and runs for a while, it will start properly all through that day. The following day the problem continues. The fuel pump has been replaced.
What could be the problem?
Monday, October 30th, 2023 AT 10:24 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,144 POSTS
It sounds like the throttle bore needs to be serviced or the engine coolant sensor is off when cold. Does the engine have any codes?

Here is a guide that can help:

https://www.2carpros.com/articles/engine-cranks-excessively-before-starting

Here is the location of the engine coolant sensor which you should be able to unplug when the problem is happening to see if it makes a difference. Also, I have seen defective fuel pump cause this issue as well, did the car have the exact same problem with the old pump?

Please run the codes as well.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Check out the images (below). Please let us know what happens.
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Monday, October 30th, 2023 AT 1:48 PM
Tiny
BLESSING EWOBOR
  • MEMBER
  • 754 POSTS
Thank you very much, I will do as said on the coolant temperature sensor.
Was this
answer
helpful?
Yes
No
Monday, October 30th, 2023 AT 8:25 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,144 POSTS
You are welcome, please let us know.
Was this
answer
helpful?
Yes
No
Tuesday, October 31st, 2023 AT 9:23 AM

Please login or register to post a reply.

Related Engine Hard To Start Content

Hard Starting
GUIDE
Hard Starting
Popular Hard Starting Causes
VIEW MORE