Quote:
Originally Posted by Picasso
The sensor is located at the end of the headers close to the cat. Here's a picture of the sensor on my truck that I took after the install. It's from the front looking to the rear. The old 22r's had issues with long tubes and 02 sensor location, just a thought, but if it started 2 years ago, thats probably not it.
The timing belt has not been replaced yet, but my engine problems started almost 2 years and 20K miles ago. Just curious, might not be a bad idea to check. 25 DEG timing at idle is a bit much, its usually 15 or so. But if it was off it should set a CAM position sensor code too.
Haven't tested this yet. Wouldn't there be some brake performance problems associated with that? NOT ALWAYS, I have seen brakes perform flawlessly with a bad booster, but it usually whistles while stepping on the brakes gently.
I have seriously considered driving to Vegas with my truck so that you could take a look at it. I cant promise anything, but I will use my fine tooth comb.
By the way, I purchased a PC based scan tool from Auterra a few months ago in hopes that it would help point to the cause of my engine problems. I initially looked closely at the trim figures for the O2 sensors but didn't see anything unusual. I'm not sure what the short and long term trim figures are supposed to look like but each sensor value was close to its counterpart on the other bank. LONG TERM SHOULD BE NO MORE THAN 10% positive to negative 10%. It should stay in that range.
Short term should be in approximately the same ranges.
The combined LT/ST Fuel Trim should add up to no more than 25% and no less than -25%, over 25% in either direction wll cause a fault code.
Something that did surprise me was the timing advance figures. According to the scan tool, the engine's timing is almost constantly advanced at around 25 degrees ± 5 degrees while driving at a constant speed. I can't find anything that tells me if this is normal.
I can record live engine data while driving and play it back later. I can then take a screen shot of either the numerical data or a graph of the data. Now that all of my coils have been replaced, I plan to take a few more data runs. Which parameters would you recommend that I record? As many as you can and then send me the info to my e-mail. Do I need a special program to watch the recorded files?
Cupidstoy,
I'll do the waterspray test to see if my engine reacts to it.
Many thanks,
Paul |
We fixed a 07 Tacoma today with a P0451 (Vapor pressure sensor fault).
The customer had installed a NEON license plate frame and had it wired into the trailer wiring. The neon converter box was BACKFEEDING Thru the tailight ground circuit to the ECU and causing ELECTRICAL FEEDBACK NOISE on the Vapor pressure sensor Feed wire.
Have any aftermarket parts installed??????
I know thats probably not your issue, but it can happen.
I'd like to see whatever info you can send, IF I AM ABLE TO VIEW IT.