Starts, Idles rough - 2

Tiny
BUGBELINI
  • MEMBER
  • 2001 TOYOTA CAMRY
  • 2.2L
  • 4 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
  • 300,000 MILES
To add to my below question, I replaced fuel filter and fuel pump recently, and didn't help. Also, I tightened vacuum hoses to eliminate an idle surging problem. What is most common cause for the hard start/stalling problem on this make/model/year? Dirty throttle body? Fuel injectors? Bad sensor? Thx!
Sunday, September 21st, 2025 AT 10:53 AM

8 Replies

Tiny
BUGBELINI
  • MEMBER
  • 6 POSTS
  • 2001 TOYOTA CAMRY
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 300,000 MILES
The car starts with difficulty, and engine stalls unless I apply gas. Problem is for the past several weeks. No engine or other warning lights.
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Sunday, September 21st, 2025 AT 11:45 AM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Yes, this can be caused by a dirty throttle body, weak fuel pump, (you replaced that so you are good) or low compression. Also, have you replaced or checked the spark plugs? IF they are worn or fouled it will cause this. Here is a guide to help you service the throttle body, please read it completely before beginning.

https://www.2carpros.com/articles/throttle-actuator-service

When checking the spark plug I would do a compression test, you can rent the gauge set from Autozone for free, they have a great store. Here is the guide and again read it completely before beginning.

https://www.2carpros.com/articles/how-to-test-engine-compression

Please go over these guides and get back to us.

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Monday, September 22nd, 2025 AT 12:39 PM
Tiny
BUGBELINI
  • MEMBER
  • 6 POSTS
Thx much! I was gonna ask if the Idle Air Control Valve is often the culprit on this make/model?
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Monday, September 22nd, 2025 AT 12:47 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Yes, that can do it as well, good call, here is a video to help us

https://www.youtube.com/watch?v=XMB16Gg-qNg

Please go over this guide and get back to us.
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Monday, September 22nd, 2025 AT 5:25 PM
Tiny
BUGBELINI
  • MEMBER
  • 6 POSTS
Thx much!
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Monday, September 22nd, 2025 AT 7:26 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
You are welcome, let me know how it goes :)
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Tuesday, September 23rd, 2025 AT 7:59 AM
Tiny
BUGBELINI
  • MEMBER
  • 6 POSTS
  • 2001 TOYOTA CAMRY
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 300,000 MILES
I wrote you earlier about the starting/stalling problem on my Toyota Camry. This time I would to know if you think replacing the Ignition Coils would solve the problem, and is this an easy job? (When should coils be replaced generally?) I may've said earlier that I've recently replaced plugs, wires, fuel filter, fuel pump. Thx!
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Monday, September 29th, 2025 AT 12:04 PM (Merged)
Tiny
BUGBELINI
  • MEMBER
  • 6 POSTS
  • 2001 TOYOTA CAMRY
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 300,000 MILES
To add to my above comment about Toyota Camry, I have unplugged MAP sensor and still no start. Also, I've swapped out fuel pump relay with identical relay (horn) and nothing doing. Thx!
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Monday, September 29th, 2025 AT 12:04 PM (Merged)

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