Does this header cause a check engine light to go on?
139610
Not the check engine light but the check emissions light but it should go away on its own after about a day or two if not you're better off getting it tuned.
1588606
The check engine light could be your oxygen sensor, if your catalyst is clogged, you will also suffer a lost of power, if not do a scan to be sure.
790126
Yes, either by 2 ways if no emission test then disable it, or use a spacer or Eldelbrock adapter 1476
230603
I have a 6.0 it did turn off check engine light for the egr but I don't know bout the PDF mine did not have it
2201933
If your dashboard security light is coming on, then start with this as this is most likely the problem and you can avoid paying for a diagnosis. If the security light is not coming on, it could still be this part, however a proper diagnosis should be done to verify for sure to prevent replacing parts that are working fine. You can go to most part stores and they can test the battery and starter to make sure no problem exists in that system and that test is usually free. The only other part we sell often that is related to this is the headlight switch, even if the headlights are working ok, the security circuit uses the same circuit. If your dashboard security light is coming on, then start with this as this is most likely the problem and you can avoid paying for a diagnosis. If the security light is not coming on, it could still be this part, however a proper diagnosis should be done to verify for sure to prevent replacing parts that are working fine. You can go to most part stores and they can test the battery and starter to make sure no problem exists in that system and that test is usually free. The only other part we sell often that is related to this is the headlight switch, even if the headlights are working ok,... » Read More If your dashboard security light is coming on, then start with this as this is most likely the problem and you can avoid paying for a diagnosis. If the security light is not coming on, it could still be this part, however a proper diagnosis should be done to verify for sure to prevent replacing parts that are working fine. You can go to most part stores and they can test the battery and starter to make sure no problem exists in that system and that test is usually free. The only other part we sell often that is related to this is the headlight switch, even if the headlights are working ok, the security circuit uses the same circuit. « Show Less
1623219
@Jake Schnetzer no I did not throw a check engine light, make sure it is a 90degree angle spacer so you will eliminate your chance of getting a fault at all. Since then I have bought a APR tune with certain deletes attached so I don't have to run the spacer anymore the tune helps. Good exhaust tho would recommend purchasing better 3" exhaust clamps as the ones they provide are pretty hard to deal with.
798030
actually it activated check engine light and caused the trans to almost slip between gears, erratic air flow creates all kinds of ecm and tcm issues, it sounds like yours may be dirty, anyways installing the new Delphi mafs sensor solved all the issues
2238969
It should tell you answer code when there is a check engine light. There are pending codes as well. It does take a couple of attempts to get the code to come up, but it works well for $20.00.
1644263
I would agree. Apparently the module is bad on ours as well so this really had no effect. It's only for bypassing the sensor. I doubt a sensor would cause your light to stay if the car is starting like normal.
96227
Jon, let me clarify. I was able to turn the check engine icon off in my 07sts. the (minor) problem may still exist in some form but i was able to turn the light off which is all I wanted for my used car with 120k miles. The scanner allows you to check what the code is decipher it (with cheatsheet) and elect to turn it off or not. I hope this helps. GSJ
559025
Just because you have an o2 sensor code it does not always mean the sensor is bad. You may have a problem with the wiring or an exhaust leak
406852
Double check and see if yours is the California emissions model, if so then no, I ordered mine and it still throws the check engine light, it's a sticker under your hood that will say California emissions model. I'm 2000 miles from Cali but these restrictions are on a ton of 4runners
263964
I dont believe it does. My car turns all power off to it when I turn the ignition off so has never been an issue for me.
1823802
I dont think so, check manual, I know that it will turn red or blink red when it needs changing
157474
No but some dealers will quickly blame the customers if they don't know what the real issue is to why a check engine may come on. If you do exactly what the directions say by K&N; you will be fine. Just be careful with the mass air flow sensor they are fragile and are easy to break. I know this because I've broke one with one of my many K&N; intake installs. Just relax, take your time and enjoy the install.
461504
On some of the CDIs you need to know if it was AC fired, or DC fired. If it is DC fired one of the pins will be hot when you turn the key on.
149347
No. If you dont put in load resistors the lights might blink fast, and a fault code might occur (or engine light). My car (an E36), did not originally have a "switch back" light function on the corner lights, so I had to wire in relays as well.