How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask john Your Own Question
john, The Car Guy
Category: Toyota
Satisfied Customers: 15039
Experience:  ase tech over 15 years in the field
Type Your Toyota Question Here...
john is online now
A new question is answered every 9 seconds

2000 toyota tundra: V8..running rough..trip..It starts and idles

Resolved Question:

2000 toyota tundra V8 began running rough during my last trip. Engine light flashing. It starts and idles but is rough.
no loud noises but exhaust noise has a quite thump at idle
Submitted: 4 years ago.
Category: Toyota
Expert:  john replied 4 years ago.
Hi . Thank you for asking your question on JustAnswer. flashing engine light is generally a missfire...I would start with spark plug change and pulling diagnostic may have coil issues

Thank you again for trusting us with your problem. John aka eauto
Customer: replied 4 years ago.
How do I check the codes?
Expert:  john replied 4 years ago.


When the Check Engine light comes on, this is the on-board computer's way of telling you it sees a problem in one of the monitored systems. Unfortunately, there are litterally 100's of parts and sensors monitored in various systems, and to take a "guess" as to which part/sensor in which system is faulty, is virtually impossible. However, if you are not experiencing any drivability issues such as skipping, stalling, shifting problems, etc, then more than likely, the problem is going to lie in the EVAP (emissions) system. Very commonly, this could be a faulty, loose or missing fuel cap or even putting fuel in while the vehicle is running. Check the cap for any cracks in the rubber o-ring on the underside. Check the fuel filler neck for any signs of chips or debris. Check under the vehicle, around the area of the fuel tank and the EVAP canister looking for any vacuum lines that have dry-rot cracks, holes or loose/missing connections. If these all check out, then the best thing to do at this point is to have the "p-codes" read from the on-board computer. These p-codes are what is used as a "starting point" for the diagnosis and will tell which part/sensor in which system has the fault. There isn't a Mechanic on the planet that can tell you what is wrong with the vehicle just by "looking" at the Engine Light. Every single Mechanic's first course of action WILL be to obtain the p-codes. Once you get these p-codes you can more accurately and efficiently diagnose the problem and then make the repair. You can have these p-codes read FREE (except in California) at any local "big chain" part store (ie. AutoZone, PepBoys, Advanced, etc). If you still need help after retrieving the codes, you can bring them here, and any of our Techs can walk you through the diagnostic procedure, and then even help you make the repair if you feel confident enough to try.

john and other Toyota Specialists are ready to help you