Cylinder misfire

105

Asked by Apr 08, 2009 at 07:49 PM about the Toyota RAV4

Question type: Maintenance & Repair

What causes cylinder misfire? Diagnostic shows that there are cylinder misfires in all cylinder. The toyota people couldn't figure out what was causing cylinder misfire in Rav4. My check engine light is on because of this I guess...any suggestions?

8 Answers

745

I am having the exact same problem with my 2006 RAV4. All 6 cylinders are showing a misfire. Does anyone out there know anything that can help us?!?! Coils wouldn't all go bad at once and I am not getting coil related error codes. Mine has about 77K miles on it.

27 of 27 people found this helpful.
80

I has the same problem on my 2002. It could be your plugs if it is a single cylinder or the timing if it is multiple cylinders.

8 of 8 people found this helpful.
60

I just took my2009 RAV4 ("J"- series) in for 20K service and reported to them that it sometimes acted exhibited a hesitation. They ran diagnostics on the memory, which showed a history of misfires. They were unable to duplicate the problem and suggested fuel as the culprit. I believe that the diagnostics show only commanded firing, not completed combustion. Anybody else have this problem?

6 of 6 people found this helpful.
745

Well I am the one who posted earlier about this problem and I figured mine out. Unless you have a more sophisticated code reader the misfires appear to be random but they are not. They were due to a bad coil. I now know that these vehicles have bad coils in general. I have already replaced 2 of them and am now having trouble with a third. It's a major issue with the RAV4's. I recommend that if you cannot afford to have it scanned and repaired at a good shop $250 that you purchase one from an auto parts store, idle your car until it begins to misfire. Unplug one coil at a time until you unplug one that does not make the care idle WORSE (all good coils will make it run worse when you unplug them) when you find that coil, replace it and you're good. Coils run about $85 each.

14 of 14 people found this helpful.
40

It would be interesting to see how many Code0300-0301 recipients have to use 10% Ethanol fuel. I am on my 3rd set of O2 sensors and plugs in my 2003 RAV4; the coils have all tested out okay. I think (at least in my case) itʻs the ethanol in the fuel which has attracted a little too-much water. Iʻm trying out a high-EtOH fuel e.g., 198 Proof, additive to reduce/change the H20 to something that should burn better than water.

4 of 4 people found this helpful.
305

I liked the answer about the gas/ethanol...I'm a car dealer with 40 years experience and I see tons of fuel related drive-ability issues ...Don't Forget...The Government makes more off of a gallon of gas than the Oil Companies...

3 of 3 people found this helpful.
40

The guy with 40 years experience is a car dealer, say no more. His answer was worthless. Easiest first. Mass air flow sensor cleaned is easy and could fix. Next unplug coil one at a time. And check to make sure car runs worse after each coil Next pull back seat and check gas tank for gauge meter bent next the car has 2 tanks kinda because of drive shaft. Going between them. One side siphons from other keeping both sides level. Making sure there's no water in there.also . Then check expensive pump. Then put computer on it and check live action. I'm assuming good spark plugs. Very lastly it could be a transmission problem . They starts as software problem then ruins your tranny. You'll end up doing both. Never mess with gas filter. Lastly a heads up. Get under your car and spray penetrant on camber adjustment and caster they are notorious for freezing or galling. Only then use that car dealer guy whom I don't trust . It's never a injector

3 of 3 people found this helpful.

I have a 1997 Rav4 and live in Costa Rica,Mechanic just installed NEW Compressor for my A/C and NOW car clutch sounds awful and A/C guy tells me I need to find the ORIGINAL wiring to connect to the compressor.Does he mean a coil pack? and is it fairly easy to find and install?

Your Answer

Add photo

Related Questions

  • Cylinder misfire 8 answers

    What causes cylinder misfire? Diagnostic shows that there are cylinder misfires in all cylinder. The toyota people couldn't figure out what was causing cylinder misfire in Rav4. My check engine light ...

    Toyota RAV4

    -

    Maintenance & Repair

  • Cylinder misfire on a Toyota Rav4? 2 answers

    I have a 2001 Toyota Rav4 and I am getting a misfire code for cylinder 4. Just to be sure that that was the problem, I switched #4 coil with #3 coil and cleared the codes. (Engine light is usually...

    2001 Toyota RAV4 Base

    -

    Maintenance & Repair

  • Misfire code on 2003 Rav4 1 answer

    Dose a 2003 Rav4 have a misfire code in its memory codes?

    2003 Toyota RAV4 Base

    -

    Maintenance & Repair

  • 2004 Toyota 4runner v6 cylinder 4 misfire 4 answers

    So on my 04 Toyota 4runner sr5 v6 it's been throwing a cylinder 4 misfire so I decided to replace the plugs and the number 4 coil pack but still no fix then I switched the new coil pack for anothe...

    2004 Toyota 4Runner SR5 4WD

    -

    Maintenance & Repair

  • Cylinder misfire 5 answers

    I keep getting a cylinder 3 misfire on my p5. I just changed the spark plugs, all could and wires, fuel injectors and cover gasket. Any ideas on what it could be?

    2002 Mazda Protege5 4 Dr STD Wagon

    -

    Maintenance & Repair

RAV4

Looking for a Used RAV4 in your area?

CarGurus has 63,987 nationwide RAV4 listings starting at $1,990.

ZIP:

Search Toyota RAV4 Questions

Toyota RAV4 Experts

#1 Tom Demyan
Tom Demyan
Reputation 2,740
#2 Robert Mitchell
Robert Mitchell
Reputation 1,180
#3 Mandy Crowe Johnson
Mandy Crowe Johnson
Reputation 760
View All

Related Models For Sale

Used Honda CR-V
967 Great Deals out of 56,814 listings starting at $1,000
Used Toyota Highlander
379 Great Deals out of 25,963 listings starting at $2,500
Used Toyota Camry
1,200 Great Deals out of 83,788 listings starting at $750
Used Nissan Rogue
533 Great Deals out of 65,915 listings starting at $1,900
Used Toyota 4Runner
228 Great Deals out of 19,354 listings starting at $1,500
Used Toyota Corolla
971 Great Deals out of 69,386 listings starting at $1,800
Used Ford Escape
1,283 Great Deals out of 84,686 listings starting at $950
Used Subaru Forester
392 Great Deals out of 33,016 listings starting at $699
Used Honda Accord
1,043 Great Deals out of 67,784 listings starting at $1,000
Used Toyota Tacoma
531 Great Deals out of 42,958 listings starting at $1,995
Used Mazda CX-5
217 Great Deals out of 28,212 listings starting at $7,490
Used Honda Pilot
404 Great Deals out of 23,419 listings starting at $995
Used Honda Civic
849 Great Deals out of 84,346 listings starting at $750
Used Nissan Murano
399 Great Deals out of 25,087 listings starting at $1,499
Used Hyundai Santa Fe
247 Great Deals out of 15,220 listings starting at $1,500

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.