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Re: O2 and air/fuel ratio sensors. Harbor Freight has the 7/8-inch crowsfoot socket tool for $6. I measured my AFR sensor (disconnected from...
Patrick, I'm wrong. The DTC was P2238 (I found it in my original post in March). Any advice for what to measure first? Thanks!
Recharging the A/C - correct low side pressure? A link somewhere on this forum leads to the 2004 Prius factory manual "Preliminary Release...
Ebay is not the final word. I felt compelled to share a source for excellent, used parts. Go to www.car-parts.com and search by vehicle and part....
Re: loud squeal from engine area when ICE speeds up above idle; noise when car stopped in Park or mo I got most of the parts to repair my Prius...
need to replace AC oil if system broke open in a crash? How? Hi Patrick. I was hoping to hear from advice from the forum about this before I...
I'm a SoCal Prius owner too. My Prius had a front end collision which damaged the AC line (line with the sight glass on it) and let all the...
air/fuel ratio sensor socket -- does the Pep Boys one require shaving like the Autozone one? The AZ socket is only $10 but requires shaving it...
Questions: 1) I will measure heater resistance, with AFR sensor unplugged. That seems straightforward. 2) Measuring current through the heater...
I'm not sure what that "12v check battery" procedure is...I'll search the forums for it. Are you thinking parking it a week ran down the aux...
PS - with 4 qts, the engine oil level is half inch over the full mark, car parked on level ground. Did not drain yet. Need to fix CEL problem, and...
I put 4 qts Mobil 1 motor oil in, with a new Mobil filter. Drove 400 miles no problem. Parked car a week. Drove car to find CEL on. Can overfull...
Patrick, I believe my DTC was P0031. I found a good diagnostics tree for P0031 on Google. Besides a bad AFR sensor, it could be wiring, the relay,...
I have a Prius factory wiring diagram CD-ROM and it also shows different wire colors than the actual AFR sensor leads (which are 2 blacks, 1...
air/fuel ratio sensor -- how to backprobe to test if working My 2004 Prius (only 20k mi) set a CEL (intermittent). OBD2 scanner said upstream...
fuel air ratio sensor - pricing and part sources? Dealer Warranty? Anyone know where to buy this part and have they tried it on their car? Ebay...
You're right on. I feel the Prius is a finely tuned and designed car. Did you see all the twists and turns and resonators along the intake tube...
Thanks so much, Patrick. I rely on & appreciate your replies to plan my next steps. I'll try removing the OEM airbox lid but sadly I'm beginning...
My air cleaner box got damaged in a wreck. I installed a B&B Cold Air Intake (the company sent me the wrong adapters and for 2 years and 10 emails...
Thanks for the reply and photo of the A/F ratio sensor. In the photo, are we looking up from under the car? How can we determine the sensor is...
