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Mad Scientist
94 scepter coupe
3,955 Posts
Discussion Starter #1 (Edited by Moderator)

Changing spark plugs the easy way

5 speed swap

CAI build

Changing the PCV valve and grommet

Block heater installation

Knock sensor replacement
Knock sensor replacement, part II

1MZ-FE engine tear down thread on

Differential fluid change

Transaxle output shaft (aka: CV shaft & half shaft) seal replacement

Replacing starter solenoid contacts

Fixing a P1705 - Direct clutch speed sensor replacement

Fixing a P0500 - Vehicle speed sensor replacement

Very helpful threads on stereo installation on amplified avalons.
Also speaker upgrades without ruining your interior.:thumbsup:

Double DIN Android installation

Stereo install help thread

Put 5.25 componets in my 98 XLS (PICS!!!!)

95 radio install step by step

Front door adaptors to fit 4 3/4" or 5 1/2" round speakers

Crutchfield 1995-1996 Toyota Avalon with 6 or 7 Speakers Wiring Information

How to remove the woofer grill on a 7 speaker system


Installing 130 amp alternator from a Highlander

Aftermarket alarm dash LED integration

Headlamp compatibility within the Gen1

OEM fog light installation

Replacing the bulbs on the instrument clusters and HVAC controls

Installing LEDs in the climate controls

Fixing the cigarette lighter socket


Rust belt rear sway bar

Front brakes DIY

Brake upgrade options, from the Gen 3/4 Camry forum


DIY: GEN1, Rack & Pinion replacement, with pics


Replacing rear power window regulator

Center console removal

Floor shifter disassembly

Fixing the "A" pillar wind noise

Fix for water in doors making a sloshing noise

Wheels from other vehicles that will fit

How to debadge your Avalon

Fuel fill door spring

Cleaning the remote FOB contacts

Adding a replacement remote (FOB)

Windshield washer spray nozzle upgrade


Solara strut tower brace installation

BMR's edit: If you know of any other Gen1 Avalon DIY threads that should be listed here, please PM me or another moderator/admin with a link to it. Also, if you're inclined to make one that doesn't already exist, please do!

4 Posts
Toyota has a kit to update/repair the harness and connector at the knock sensors on the 1MZ. This assembly is a beefed up version of the one that shipped on the vehicle. Currently I am a lube tech at a Toyota dealer, and stumbled into this while fixing a car my fiance bought. A master tech (20+ years exp) next to me warned me to replace them when I had access to them, but parts would take a day and I didn't want to extend my time on the car, so I was really careful with them instead. Nope, if you disturb or even have access to these wires at all during a job, and they are the originals, the general rule at our dealership is to offer to replace them. A slight breeze across their fragile copper bones is often enough generate knock sensor codes, after the fact, I just found this to be true; believe me, I was very gentle on these wires! Replace them if you touch them at all. Now I have to take the intake off again, and I will be crossing my fingers that 1) the new intake gaskets don't need to be replaced 2) Two Gallons of 'Toyota Red Coolant' don't spill or become contaminated 3) The knock sensors may be broken (not likely) which would have known by just doing this in the first place! And most importantly, I'll be finishing this at my house because 4) Embarrassment of not taking good advise from a respected mentor technician should he find out!

For our California Emission, 1999 Avalon XL, with the 1MZ-FE engine, The part number is "82219-07010", Description: "Wire, SE121" and list is $37.95. CHANGE TO THIS PART IF YOU HAVE ACCESS TO IT ON YOUR 1MZ-FE ENGINE! :eek:wnedsmas

Super Moderator
12,806 Posts
A master tech (20+ years exp) next to me warned me to replace them when I had access to them...
Excellent advice. I just replaced knock sensors and that cable on my Camry, and the cable connectors at the knock sensors crumbled like egg shells when I tried to disconnect them. I guess ~20 years of heat & fumes took its toll.

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