RATTALING NOISE AT 3000 rpm!!

jaysun · 04-29-2006, 06:37 AM

i have a non-turb auto tranny 1989 supra 75,000 on the meter. i just changed my oil with valvoline? 20W and ever since it made the rattling sound... i rev it to about 3000 rpm (around there) and it just starts to rattle. also when i gas it it also rattles around 30-40 miles.

rnoswal · 04-29-2006, 06:41 PM

20w is awful thin viscosity. Old oil ends up that thing after a few thousand miles. Try putting some 50w oil in along with some STP or same type additive. It sounds like your engine is on its death bed with the rattling. Usually that means the connecting rod bearings are worn out. That usually happens with age, but also with low oil. After a while the oil seals leak and it only takes a few seconds of no oil to the bearing surface and the bearings and crank need rebuilding.

Let someone who might be familiar with engines listen to it. They don't have to be a Toyota expert because all bearing noises sound similar. There is no fix other than pulling the engine and getting it rebuilt or just replacing the engine.

Let us know.

Russ

Reeves · 04-29-2006, 07:32 PM

Sounds like what happened to my baby. It's in the middle of a rebuild and currently at the machine shop.

jaysun · 04-30-2006, 01:23 AM

my engine only has 75,000 i dont think it should have any problems. the engine was fine before i changed the oil, its probably because of the oil..i hope!! i hope!! im going to change my oil, i just bought mobil 1 15-50w. well i hope it works just fine, if not im going to swap with a 1jz-gte. you guys know how much it cost for a 1jz-gte JDM? im guessing about 1500? well i hope everything goes well. if my 7m-ge works then ill just add some aftermarkets on that bby.

stumpjumper · 05-01-2006, 05:28 AM

Unfortunately, It isn't always about the mileage. It's about how well it was taken care of during those miles that matters. If it ran low on oil for a while, or ran on old oil for some time it could mean curtains for the engine.

Good luck.

jaysun · 05-03-2006, 05:57 AM

well i just changed my oil to mobil 1 15-50w its top of the line oil. yet i still get the knocking noise. i dont think my dad took good car of that thing. well i still didnt get a tune up and now im guessing its the CAT converter. i dont know if my engine rattles or the CAT. maybe its the CAT or the engine, im going to have a professional look at it. ill update

04-29-2006, 06:37 AM	#1
jaysun Stock Join Date: Apr 2006 Location: USA Posts: 27	RATTALING NOISE AT 3000 rpm!! i have a non-turb auto tranny 1989 supra 75,000 on the meter. i just changed my oil with valvoline? 20W and ever since it made the rattling sound... i rev it to about 3000 rpm (around there) and it just starts to rattle. also when i gas it it also rattles around 30-40 miles.

05-03-2006, 05:57 AM	#6
jaysun Stock Join Date: Apr 2006 Location: USA Posts: 27	well i just changed my oil to mobil 1 15-50w its top of the line oil. yet i still get the knocking noise. i dont think my dad took good car of that thing. well i still didnt get a tune up and now im guessing its the CAT converter. i dont know if my engine rattles or the CAT. maybe its the CAT or the engine, im going to have a professional look at it. ill update __________________ 7m-ge auto tranny non turbo so far stocked ..

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04-29-2006, 06:41 PM	#2
rnoswal Lexus & 550's Join Date: Apr 2005 Location: Bossier City LA Posts: 556	20w is awful thin viscosity. Old oil ends up that thing after a few thousand miles. Try putting some 50w oil in along with some STP or same type additive. It sounds like your engine is on its death bed with the rattling. Usually that means the connecting rod bearings are worn out. That usually happens with age, but also with low oil. After a while the oil seals leak and it only takes a few seconds of no oil to the bearing surface and the bearings and crank need rebuilding. Let someone who might be familiar with engines listen to it. They don't have to be a Toyota expert because all bearing noises sound similar. There is no fix other than pulling the engine and getting it rebuilt or just replacing the engine. Let us know. Russ

04-29-2006, 07:32 PM	#3
Reeves 3" Exhaust Join Date: Sep 2005 Location: San Diego Posts: 98	Sounds like what happened to my baby. It's in the middle of a rebuild and currently at the machine shop.

04-30-2006, 01:23 AM	#4
jaysun Stock Join Date: Apr 2006 Location: USA Posts: 27	my engine only has 75,000 i dont think it should have any problems. the engine was fine before i changed the oil, its probably because of the oil..i hope!! i hope!! im going to change my oil, i just bought mobil 1 15-50w. well i hope it works just fine, if not im going to swap with a 1jz-gte. you guys know how much it cost for a 1jz-gte JDM? im guessing about 1500? well i hope everything goes well. if my 7m-ge works then ill just add some aftermarkets on that bby.

05-01-2006, 05:28 AM	#5
stumpjumper 3" Exhaust Join Date: Dec 2005 Posts: 74	Unfortunately, It isn't always about the mileage. It's about how well it was taken care of during those miles that matters. If it ran low on oil for a while, or ran on old oil for some time it could mean curtains for the engine. Good luck.