Loud Idle - Toyota Nation Forum : Toyota Car and Truck Forums

ttr125mar · 11-04-2004, 02:32 PM

Hey, I recently bought a 92 pickup with some frontal damage, I expect to fix it up but when it gets warmed up the idle goes from loud to normal in that patteren laud-normal,loud-normal, on and on. It shifts fine, it may need a new radiator but it doesnt leak but you can tell the fan hit it, It needs a new oil seal where the timing chain is I think (there is alot of oil where it is on the outside of the engine). I think that if I replace the head gasket this idle thing may go away but if any of you had this problem and know the parts I need and the sorce then plz any advice will be appreciated.

Thanks,
Mario

Sidney · 11-04-2004, 08:34 PM

Regarding the front oil seal read below and the follow up is regarding your loud idle fluctuation is your oxygen sensor.

Harmonic balancer repair sleeve/speedy sleeve (seal saver sleeve,balancer repair sleeve,crank seal saver) slides over shaft:

Felpro # 16214=$5
Future # 21-2514 (aluminum shaft sleeve included)
NAPA repair sleeve # 99177 (Mack PDC,National,Car Quest)
Pioneer repair sleeve (Silver Seal) # HB-4133

attached with some epoxy or use Loctite 609 or 242 or put some red RTV and fill that groove before you put it on also look in the yellow pages under “bearing suppliers”.
For a picture:

http://www.chicago-rawhide.com/auto/speedi/speedi.htm

Front crank oil seal (front input shaft seal):

Fed Mogul (National,Timken Seals) # 710345
Toyota # 90311-45014 (brown, 7 mm thick) & 90311-30115, Chicago Rawhide # CR17758 (9 mm thick) or CR550294 (7mm thick)
Beck Arnley # 0522144

NAPA repair sleeve # 99317(rear),list price $68.10>$33.19 net Canadian $
and the seal was $12.10

Rear crank seal Toyota # 90311-80010,90311-80001 (the earlier 20R & 22R seal),90311-80010 (is the improved version. It is made out of silicone and has double lip for better sealing).

This info provided by EB:there are 3 versions of the speedy sleeve:
1)one is light steel with spray chrome flashing(yuk)
2)one is steel with chrome plating
3)and the good ones are all stainless steel and they are made in Canada.

http://www.barneymc.com/toy_root/techneek/frntseal.htm

The oxygen sensor is replaced for free in the USA only when the vehicle reaches it's first 80 000 miles regardless of the age & number of owners as stated in the factory owner's manual in the maintenance section,some Toyota dealerships are reluctant to replace it for free if that happens contact the Toyota regional head office for your region where they will give your local dealership 48 hours to comply.
On average the oxygen sensors should be replaced every 6 years or 100 000 miles or so which ever comes first.
Symptons of a bad o2 sensor are poor gas mileage,hesistation in acceleration and worse emmissions,the 02 sensor is designed to function once the vehicle has warmed up which is about after 10 minutes where the thermostat begins to open then the vehicles ECU system enters what they call a "closed loop system" then the exhaust manifold's temperature reaches 400 degree Ferenheit (I think)that's where the sensor starts to do it's job,many folks think that the o2 sensor is bad but an exhaust leak can cause excess oxygen to enter the exhaust system thereby fooling the sensor into thinking there is too much oxygen,there are other problems that could cause it to give false reading such as a vaccuum leak.

If you discover that the o2 sensor is bad and it is not under warranty then from my/others experience/research purchase an o2 sensor in the following order:

1)Toyota (NipponDenso now called Denso)
2)Denso aftermarket (Same as original but sold aftermarket)
3)NTK (oxygen sensor division of NGK)

Available at:
http://www.1sttoyotaparts.com/part_number.html
(they have the lowest prices in the USA & probably the whole world)
http://www.densoaftermarket.com
http://www.ngksparkplugs.com

Note:Toyota has an organized numbering system which dictates that the first 6 digits of their 10 digit (5 digits-5 digits)part numbers represents the part # and the remaining 4 digits dictate country of origin,color code,trim package and so on not in that order as shown in the free Toyota EPC (electronic parts catalog) download at:

http://www.yankeetoys.org/docs.htm
http://oldschool.supracentral.com/htm/epc.htm
http://www.turbosupras.com/pages/technical/epc.htm
http://www.showmesome.info/hilux/info/download_links.htm
http://www.speedtoys.com/%7Earnout/
http://www.speedtoys.com/~gemohler/epc/
http://membres.lycos.fr/doc4toy4u/setup98_EPC_TOYOTA.zip

Here is a post fellow poster (Todd) who posted it on another 4-Runner/Pickup discussion site about 2 years ago:

"There is a newer version of the EPC available for download.Similar in size to the older version (254MB and 220MB zipped files)I have them on my personal FTP server (not always running), and they are also on another FTP server.

Address and login for mine:

151.203.109.45 Port 21
Login: t4x4pickup
Password: t4x4pickup

Address and login for the other (usually running 24/7):

ftp.lawvision.net

User: upload
Pass: upload

Apparently they cover 1988 and up vehicles (I haven't unzipped mine yet).

Feel free to upload and download on mine.

Enjoy!
Todd E:zoddoo@hotmail.com"

For version 1/2002 the passwords are:

Europe 02052311
General 02032511
U.S.A. 02022608
Japan 02071608

Here’s the codes for the 01/2002 disks:

Europe 02022004
General 02022212
U.S.A. 02022608
Japan 01121209

Here are online Russian dealerships that place the free Toyota EPC catalog online to be viewed only:

http://catalog.exist.ru/toyota
http://www.elcats.ru/toyota
http://www.japancats.ru/toyota/

These are text/site language translation softwares:

http://babelfish.altavista.com/tr
http://www.translate.ru/eng/srvurl.asp
http://www.google.com/language_tools
http://www.tranexp.com:2000/InterTran
http://www.zappmedia.com/services/onlinetranslators/index.html
http://freetranslation.com/web.htm[/url]
http://dictionary.reference.com/translate/text.html

NGK has a powerfull oxygen cross reference software which cross references their different part #'s into either a single,double,triple or a quad wire o2 sensors so you may find 10 or so different part #'s for your 94 pickup and all you have to do is plug those part #'s into:

http://www.1sttoyotaparts.com/part_number.html

and see which one is cheaper I think you will find one for as low as $60.The NGK cross reference software is:

http://home.att.net/~ngksparkplugs/w...ome.html-.html
before you replace the oxygen sensor soak the 14 mm brass nuts with any of these deep penetrating oils several times for several hours:

1)PB Blaster
2)Liquid Wrench
3)Kroil Oil
4)Aero Kroil & Sili Kroil
5)Toyota Rust Penetrant or High Performance Penetrating lube
6)Rust Check

the first ones being the best,also if you decide you need new ones here is the Toyota part for the exhaust manifold (brass)nuts # 90179-10175 (14 mm socket)

Oh yeah,I bought a NTK (NGK) oxygen sensor for my 85 4-Runner and it came with a gasket and a genuine made in Japan black plastic tie wrap I don't know if the Toyota or Denso aftermarket ones come with a gasket but ask them before you buy them.

To clean the throttle body remove the air intake hose and examine the intake and throttle body for excessive carbon build if found then buy a can of throttle body cleaner labeled "safe on oxygen sensors,TPS's and catalytic converters" and make sure your engine is fully warmed up prior to using as when the throttle body is hot it dissolves the carbon easily and quickly.The labels usually specify to park the vehicle at groung level (0 degrees,no inclination) and have the engine running but I disagree I instead park the vehicle on a hill facing down and shut the engine off and hold a rag below the lip of the throttle body and poor the stuff and use a tooth brush.

Sidney
Repairs tv's,vcr's,home/car audio out of my home
E-mail:sidneybek@yahoo.com
Dartmouth,Nova Scotia
Canada
1985 Toyota 4-Runner,22R-E,W56,RN60LV-MSEK,rusted rear step/towing chrome bumper with 241 000 KM