Toyota

Have Toyota Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

I have an 08 Supercharged Tundra. For a couple months now,

Customer Question
I have an 08...

I have an 08 Supercharged Tundra. For a couple months now, the check engine and VSC lights have stayed on (flashing). Diagnostics keep reporting a misfire on cylinder 5. The plug, injector and coil have all been replaced on this cylinder. Toyota shop now claims its a valve spring causing the problem but me and my local mechanic both agree that doesn't sound right because though the problem lights stay on, it runs rough at random and typically when I cut the truck off and crank it right back up, it'll run smooth again. Thoughts on what the problem could be?

Mechanic's Assistant: Does the light stay on, or does it blink?

Blinks

Mechanic's Assistant: Are you fixing your Tundra yourself? What have you tried so far?

I'm not doing the work myself but so far, the plug, coil, and injector on cylinder 5 have been replaced, all other coils replaced, and front catalytic convertor and 02 sensor replaced. All other maintenance always performed as scheduled. The truck does have 260k miles but this is the first real problem I've ever had out of it.

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

I think that's everything.

Submitted: 3 months ago.Category: Toyota
Show More
Show Less
Ask Your Own Toyota Question
Answered in 3 hours by:
3/23/2018
Toyota Mechanic: Ted Ritter, Toyota Master Tech replied 3 months ago
Ted Ritter
Ted Ritter, Toyota Master Tech
Category: Toyota
Satisfied Customers: 4,710
Experience: Toyota Master Tech, ASE Certified
Verified

T​hanks for posting

So far it has not been to a Toyota dealer, is this correct?

Is it a V6 or V8?

Standing in front of the engine which cylinder has the problem?

Ask Your Own Toyota Question
Customer reply replied 3 months ago
It has been to the dealer. They're the ones that say it's a bad valve spring. Cylinder 5 is the one that keeps showing up as a misfire in the diagnostics.
Toyota Mechanic: Ted Ritter, Toyota Master Tech replied 3 months ago

Thanks for the response, a broken valve spring is a possibility. maybe a compression test wouyld confirm it.

Ask Your Own Toyota Question
Customer reply replied 3 months ago
It's been tested for compression and looks good.
Toyota Mechanic: Ted Ritter, Toyota Master Tech replied 3 months ago

If you clear the light how long does it take to come back on again, does it misfire at idle only, is there a loss of power?

You mentioned the check light is flashing, this indicates that there is a misfire.

Did they give you the code number and do you know which cylinder has the problem, I know it's #5, can ypou give me the physical location of it according to the dealer.

I'll have to ask again, is it a V6 or V8, the cylinders are not numbered the same, the #1 cylinders are not on the same bank, this can be a source of confusion.

Ask Your Own Toyota Question
Customer reply replied 3 months ago
It's a V8. If I clear it, it varies how long it takes the lights to come back on. Last time, I drove it for a few days before it came back on but if it's running smooth, no lights, and I punch it, it'll misfire every time around 4,000 rpm. I don't have the code number, just know that it's always cylinder 5
Toyota Mechanic: Ted Ritter, Toyota Master Tech replied 3 months ago

Sorry I had to opt out on this one.

Ask Your Own Toyota Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a toyota mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Ted Ritter Your Own Question
Ted Ritter
Ted Ritter
Ted Ritter, Toyota Master Tech
Category: Toyota
Satisfied Customers: 4,710
4,710 Satisfied Customers
Experience: Toyota Master Tech, ASE Certified

Ted Ritter is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

THANK YOU, THANK YOU, THANK YOU!! I've got my baby back. Tomorrow I will get a tank of high octane, remove the top, go for a long long ride and enjoy my car. THANK YOU!

JugheadUSA

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

Chris (aka-Moose)

Chris (aka-Moose)

Auto Technician

1,104 satisfied customers

16 years of experience

Marty

Marty

ASE Certified Technician

197 satisfied customers

ASE & Bosch Master Tech. 30 years experience.

Amedee

Amedee

Toyota Technician

1,243 satisfied customers

ASE certified tech advanced level specialist. Wisconsin certified emissions state inspector

Anthony

Anthony

ASE Certified Technician

401 satisfied customers

ASE Master Automobile Technician with over 20 years exp. in this field.

Richard

Richard

ASE Certified Technician

9 satisfied customers

Toyota tech. ASE Certified Technician

Skyvisions

Skyvisions

ASE Certified Technician

13,051 satisfied customers

Toyota Master Diagnostic

Genchi Genbutsu

Genchi Genbutsu

Toyota Master Technician

3,761 satisfied customers

Toyota Certified Master Diagnostic Technician, ASE Master Technician with L1 Advanced Engine

< Previous | Next >

Related Toyota Questions
The Check Engine light came on, the VSC light came on and
The Check Engine light came on, the VSC light came on and the 4WD light came on and the car started to shake while I was driving... … read more
Ron Z.
Ron Z.
Vocational, Technical or Trade Scho
2 satisfied customers
2007 RAV4 - check engine, VSC and 4WD lights came on, car
hi 2007 RAV4 - check engine, VSC and 4WD lights came on, car feels like it is going to stall when idling … read more
Ron Z.
Ron Z.
Vocational, Technical or Trade Scho
2 satisfied customers
I have a2002 toyota highlander. Its been running awesome.
I have a2002 toyota highlander. Its been running awesome. Then all of a sudden. I have missfires in 3 @ 4. The plugs and all coils where replace a thousand miles ago. My tech is saying there probably … read more
MDT-89
MDT-89
24 satisfied customers
Check engine light VSC 2001 toyota highander. riding rough.
check engine light VSC 2001 toyota highander. riding rough. smells little "burnt". Oil is ok. … read more
Ron Z.
Ron Z.
Vocational, Technical or Trade Scho
2 satisfied customers
We just repaired our 2006 Toyota Avalon. We put in new plugs
We just repaired our 2006 Toyota Avalon. We put in new plugs and replaced coil pack on cylinder 5 as the code indicated. Our car still sounds rough and check engine light and the VSC light is also on.… read more
Ron Z.
Ron Z.
Vocational, Technical or Trade Scho
2 satisfied customers
Check engine light on, vac light on, and trac off and not
Check engine light on, vac light on, and trac off and not riding smooth all of a sudden … read more
Ron Z.
Ron Z.
Vocational, Technical or Trade Scho
2 satisfied customers
This morning the VSC off light is flashing and check engine
This morning the VSC off light is flashing and check engine light is on … read more
Ted Ritter
Ted Ritter
Toyota Master Tech
4,710 satisfied customers
I change the spark plugs in my 2011 Siana now it says check
I change the spark plugs in my 2011 Siana now it says check vSC system and it idles rough … read more
Ted Ritter
Ted Ritter
Toyota Master Tech
4,710 satisfied customers
I have had for the last two years and 30,000 miles a 2003
I have had for the last two years and 30,000 miles a 2003 Tundra 4.7 liter which has a TRD supercharger (since the truck was new, and yes, 91 or better octane at all times). It's in very good shape. I… read more
Ron Z.
Ron Z.
Vocational, Technical or Trade Scho
2 satisfied customers
Avalon: 2007 Toyota avalon 100K getting random misfire codes.
2007 Toyota avalon 100K getting random misfire codes. Installed new plugs, coils, MAS and gas cap. Still happening. VSC, engine light on. Occasionally illuminated lights will start blinking and engine… read more
Ted Ritter
Ted Ritter
Toyota Master Tech
4,710 satisfied customers
Tundra: Want to swap ecm on my 011 flex fuel supercharged tundra
Want to swap ecm on my 011 flex fuel supercharged tundra to a non flex fuel unit. What all would that entail?… read more
Skyvisions
Skyvisions
ASE Certified Technician
High School or GED
13,051 satisfied customers
Toyota Sequoia Limited: I have an 02 Toyota sequoia, v8, 4.7L,
I have an '02 Toyota sequoia, v8, 4.7L, I recently had timing belt and spark plugs replaced. I have driven it on aXXXXXtrip since, and it ran fine. A couple days ago, it started running rough and CEL … read more
Skyvisions
Skyvisions
ASE Certified Technician
High School or GED
13,051 satisfied customers
Toyota Highlander: My husband accidentally drove my 2004 highlander
My husband accidentally drove my 2004 highlander v6 awd into 2 feet of water this morning. The VSC light came on, and the car is running rough now. He brought it into a non-toyota shop and the fuel-in… read more
Ted Ritter
Ted Ritter
Toyota Master Tech
4,710 satisfied customers
tundra: on 4 6 replace plugs swap coils..mass air..valves..intake
08 tundra 4.0 constant misfires on 4 6 replace plugs swap coils and o2s doesnt have cats piped through runs good cold until load applied then 4 6 start to misfire they run up exactly the same on misfi… read more
Skyvisions
Skyvisions
ASE Certified Technician
High School or GED
13,051 satisfied customers
2000 Toyota Tundra: V8..misses on cylinders 1 - 3 - 5. What
2000 Toyota Tundra 4.7 V8 misses on cylinders 1 - 3 - 5. What could be the problem? Have checked coils, injectors, and fuel pressure. They are all OK… read more
Toyotapro
Toyotapro
Technician
Vocational, Technical or Trade Scho
9,283 satisfied customers
2009 Toyota: cyl..catalytic insufficiency dtc..under load
2009 Toyota Tundra TRD Supercharged 5.7l (3urfe) Cylinder Misfire: Generic misfire p300. But a constant Cyl 4 misfire: A catalytic insufficiency DTC also, which seems to be related to the misfire. mis… read more
Toyotapro
Toyotapro
Technician
Vocational, Technical or Trade Scho
9,283 satisfied customers
2003 Toyota Tundra: FE..Ive replaced coils..spark plugs
2003 Toyota Tundra 2UZ-FE codes came up with 1,3,5 cylinder misfire. Truck was driving fine, and out of nowhere I have 3 codes come-up, and have no power. I've replaced coils, and spark plugs same iss… read more
Skyvisions
Skyvisions
ASE Certified Technician
High School or GED
13,051 satisfied customers
2001 Toyota Avalon XLS: the check engine light, VSC..accelerator..rpm
I have a 2001 Toyota Avalon XLS and the check engine light, VSC and VSC OFF lights are illuminated on the dashbooard. I took the car to AAMCO because I felt the car shaking as it accelerated. I also n… read more
Toyotaman
Toyotaman
Mastertech
Vocational, Technical or Trade Scho
2,650 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x