Toyota Camry 2001:Any Ideas about Blinking Check engine Light and random Misfire CodeP0300

25

Asked by Dec 19, 2014 at 02:04 PM about the 2001 Toyota Camry LE

Question type: Maintenance & Repair

2001 Toyota Camry LE, 4-cylinder
I have replaces all Spark Plugs and Plug Wires and Fuel filter. I also cleaned the TPS valve.

6 Answers

9,060

When an engine misfires, it can be fuel delivery related, spark related, and base engine related. You need the pinpoint tests for the code, p 0300 You can seek data and possible causes at enginecodes .com, the public libraries' auto database, or contact the emissions authority for advice about certified shops in your area. Since misfires can affect your tests when you get them, it behooves you to seek their help. They cannot charge you for unrelated repairs. they would perhaps recommend other things they find, but concentrate on the diagnosis. If you did your own guessing, you could spend money on unnecessary parts. It is less expensive to buy the testers and tools to do your research and see what your tests reveal. Often misfire codes are injection or distributor related. specific tests in these areas can prove you just need one injector or one part in your distributor, or one ignitor coil or one switch. Overheats can cause failures that are found during diassembly and inspection. For example an ignition part with a crack or temp related internal failure by short circuit or open circuit. Some code readers can give clues about inop injectors etc. The code reader can be had at the local parts store to observe all of its data rather than just a code. You have some things to do before any educated guesses beyond this can be of real help.

1 of 1 people found this helpful.

You might have a vacuum leak. Check the under hood decal for a vacuum diagram. Check all hoses for cracks disconnects and hardness. Sounds like you may have a LEAN misfire. Difficult to track down without special tools and equipment.

25

Thanks Mark, Here is what I have done sofar: -replaced Spark Plugs -replaced spark plug Wires -Removed the coils and measured the resistance between Terminals; they read 12.95 and 12.85 -Cleaned Idle control Valve -Removed all 4-injectors and cleaned them with pressurized carburator cleaner; connect a 9-volt battery and they all Spray -blow smoke into Vaccum lines and could not see any leak - I am going to do a cylinders compression Test

1 of 1 people found this helpful.
25

any other ideas on what else I can do to find the root cause of the Problem?

1 of 1 people found this helpful.
9,060

Can you see hairline cracks in the ignition coils ? what is the reading to the end when you run the second ignition coil test primary to secondary. how many ohms ? Have you at least a chilton manual ? Free, if you request it at the public library. Whose brand of spark plugs are you going to use and what part number? Is that part of the problem? Deposits on the old ones ? Next, what is your fuel pressure, rest pressure, and volume ? Harbor freight is an inexpensive place to find testers and supplies to make things that help.

9,060

A lean misfire can be considered tune up related. if you are behind on maintenance and have many hoses to contend with, concentrate on one at a time. cut sample segments to match up your part needs. The best emission hoses are at toyota. this solves your next repeat repair. A compression gauge is available at harbor freight, be sure the threaded end can reach into the cylinder head threaded spark plug holes.

Your Answer

Camry

Looking for a Used Camry in your area?

CarGurus has 76,315 nationwide Camry listings starting at $1,400.

ZIP:

Toyota Camry Experts

  • #1
    Reelin68
    Reputation
    14,400
  • #2
    Tom Demyan
    Reputation
    4,830
  • #3
    tenspeed
    Reputation
    3,090
View All

Related Models For Sale

Used Honda Accord
859 Great Deals out of 79,210 listings starting at $1,444
Used Toyota Corolla
886 Great Deals out of 65,497 listings starting at $1,250
Used Honda Civic
696 Great Deals out of 53,269 listings starting at $1,495
Used Nissan Altima
1,172 Great Deals out of 74,900 listings starting at $900
Used Toyota Avalon
234 Great Deals out of 14,441 listings starting at $1,600
Used Toyota RAV4
703 Great Deals out of 55,044 listings starting at $1,995
Used Hyundai Sonata
763 Great Deals out of 53,222 listings starting at $1,499
Used Nissan Maxima
340 Great Deals out of 20,723 listings starting at $1,175
Used Toyota Highlander
556 Great Deals out of 37,500 listings starting at $2,000
Used Honda CR-V
722 Great Deals out of 53,300 listings starting at $1,500
Used Chevrolet Malibu
1,057 Great Deals out of 57,048 listings starting at $995
Used Toyota Tacoma
644 Great Deals out of 41,017 listings starting at $2,500
Used Toyota 4Runner
303 Great Deals out of 27,641 listings starting at $1,900
Used Toyota Prius
323 Great Deals out of 15,296 listings starting at $1,100

Used Cars For Sale

2018 Toyota Camry LE For Sale
11,460 listings starting at $20,098
2017 Toyota Camry LE For Sale
34 Great Deals out of 1,423 listings starting at $12,799
2016 Toyota Camry LE For Sale
46 Great Deals out of 1,680 listings starting at $9,950
2015 Toyota Camry LE For Sale
65 Great Deals out of 1,773 listings starting at $9,999
2014 Toyota Camry LE For Sale
46 Great Deals out of 930 listings starting at $8,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.