unusual High rpm noise. Sc300 w a 1JZ swap
02-15-10, 01:17 PM
#1
unusual High rpm noise. Sc300 w a 1JZ swap
Okay I bought the car about two weeks ago and everything in the car is perfect. Engine ran/runs like a champ and all electros work. About two days ago I decided to open it up on the highway when I noticed a studerat about 4500 rpm and up if I'm stepping on the gas. If I gradually press the gas up to full throttle I don't get as much engine banter. It feels like some sort of fuel lag and I'm just seeking advice from the know it alls because I'm new to the Lexus/Toyota world.
Specs on the car as far as I know for info purposes:
1JZ twin turbo swap
rebuilt engine
it's completely stock save for an intake Dyi.
If there's some other info that would help let me know. I'm going to get a sound clip to post up for reassurance.
Any help is welcome thanks
Specs on the car as far as I know for info purposes:
1JZ twin turbo swap
rebuilt engine
it's completely stock save for an intake Dyi.
If there's some other info that would help let me know. I'm going to get a sound clip to post up for reassurance.
Any help is welcome thanks
02-15-10, 05:09 PM
#2
Rookie
Join Date: Feb 2010
Location: Fl
Posts: 87
Likes: 0
Received 0 Likes
on
0 Posts
Does it sound like a howl? If so it sounds like your second turbo just gave in. If the first turbo pulls hard like usual then after transition it flattens out and you have the noise it's either a vacume for the secondary or the turbo itself. Pull the hotpipe off that back one and see if there is a bunch of oil in it.
02-21-10, 10:31 AM
#3
Driver School Candidate
Join Date: May 2008
Location: San Antonio, Texas
Posts: 18
Likes: 0
Received 0 Likes
on
0 Posts
I don't remember if I changed the fuel filter on it, so that's the first thing I would change. You can't go wrong doing that anyway. It does have the BFI intake mod and a gutted cat and free flowing exhaust. Maybe it's running lean under load? Have the fuel pressure checked under load. It's a completely stock 1JZGTE from a 1993 Toyota Soarer. Good luck, treat her right, & post up pictures of her when you put rims on it! I really miss the car, wish I could have kept it!
02-21-10, 03:23 PM
#4
Lexus Test Driver
iTrader: (2)
Join Date: Jan 2009
Location: QC
Posts: 1,449
Likes: 0
Received 0 Likes
on
0 Posts
The 1JZ turbos work together...
Does it sound like a howl? If so it sounds like your second turbo just gave in. If the first turbo pulls hard like usual then after transition it flattens out and you have the noise it's either a vacume for the secondary or the turbo itself. Pull the hotpipe off that back one and see if there is a bunch of oil in it.
02-22-10, 03:26 PM
#6
Driver School Candidate
Join Date: May 2008
Location: San Antonio, Texas
Posts: 18
Likes: 0
Received 0 Likes
on
0 Posts
I highly doubt that the turbos are going bad. I'm the one that did all the work on the car. The engine and turbos were in really good shape when I got em, and I've religiously maintained it. I also never ragged on it. As far as spark plugs go, it's got the regular NGK plugs gapped to .38 if I recall. Not to sure, I know they come pre-gapped, but I did verify it before I installed new plugs. That was only roughly 3,000 miles ago.
03-19-10, 07:07 PM
#7
sup fellas. changed out the fuel filter today. that was a mess and a half lol but anyway the noise and effects are still there. i hooked up a boost guage to it yesterday to see what it was doing and from the looks of it, it builds up to about ten pounds then drops off while still under full load. you can feel the power drop off when it starts to studder
Trending Topics
03-20-10, 08:16 AM
#9
alright awesome. ill do that as soon as possible. sucky thing is my battery took a dump on me yesterday and wont hold a charge anymore. ive checked the atl and the fuses and most of the wiring just in case but everything pointed to it and sure enough its a dead one lol
03-25-10, 12:29 PM
#11
nope 5spd.....
well i took out the coils and the sparkplugs to day to get a good look at what im dealing with.... and ive got quwstions lol
all the plugs looked like this...not really too bad but still...you could see where there was a water build up and what not...
everyone of um its crack along its neck like that and all of them are cracked at the base slightly.
questions are ...
1 do most of the coil packs have these small cracks and do they effect it any kind of way?
2 why does my cars rpms rise and fall when its a cold start..... 700rpms to about 1000rpms rinse repeat for about 2 minutes...
well i took out the coils and the sparkplugs to day to get a good look at what im dealing with.... and ive got quwstions lol
all the plugs looked like this...not really too bad but still...you could see where there was a water build up and what not...
everyone of um its crack along its neck like that and all of them are cracked at the base slightly.
questions are ...
1 do most of the coil packs have these small cracks and do they effect it any kind of way?
2 why does my cars rpms rise and fall when its a cold start..... 700rpms to about 1000rpms rinse repeat for about 2 minutes...
03-25-10, 04:53 PM
#13
Buy a new set of 2jzgte coil packs from Jeff Watson at Champion Toyota.
What you can do with these coilpacks for now is buy some electrical tape and wrap the **** out of the plastic parts that are cracked. This is a common issue known to cause running problems too.
What are you saying about 'water' I can't tell what you are talking about...
What you can do with these coilpacks for now is buy some electrical tape and wrap the **** out of the plastic parts that are cracked. This is a common issue known to cause running problems too.
What are you saying about 'water' I can't tell what you are talking about...
03-26-10, 11:18 PM
#14
oh it just looks like there was some water build up in a few of the spark plug tunnels....and there was a bit of rust build up on the thread of them. so new spark plugs 2jz coilpacks and it should be runnin good again....
(((Check the ECU, does your cabin smell like S#### while do driving? )))
na inside of the car smells just fine...ive got a bit of back fire every now and then but othere than that its okay
(((Check the ECU, does your cabin smell like S#### while do driving? )))
na inside of the car smells just fine...ive got a bit of back fire every now and then but othere than that its okay