Automatic 1j sputtering under boost
Automatic 1j sputtering under boost
Recently my 1J has been doing this thing where from about 3k on its feels like its sputtering, it continues to rev up but its very slow. It makes a tttatatattatatata noise, almost like its blowing off really fast. I just changed the plugs about a week ago to NGK BKR6E's gapped to .30. Its a stock motor with just a cone air filter, no exhaust or FMIC. What would I want to start looking towards? If you look at the boost gauge its not holding steady its little needle is bouncing around between 10-12 really fast.
Thanks.
Still on stock twins, automatic transmission
Thanks.
Still on stock twins, automatic transmission
read this build thread, it has 1600 and 3k sputter problems with fixes
https://www.clublexus.com/forums/per...ith-w58-8.html
https://www.clublexus.com/forums/per...ith-w58-8.html
read this build thread, it has 1600 and 3k sputter problems with fixes
https://www.clublexus.com/forums/per...ith-w58-8.html
https://www.clublexus.com/forums/per...ith-w58-8.html
So I pulled the ECU and looked at it, none of the caps. are leaking nor are there any burn marks. It looks like it was opened and repaired back in 2009 though as there is a tag on the back dated from then. Also found a Greddy Boost Cut Defender SW20 for it.
What are the plugs I want to be running on this thing?
What are the plugs I want to be running on this thing?
You mentioned that this just recently happened. How long ago?
What year is your SC? I read somewhere on later models where there was something about cutting a single black wire on the body plug. This helped some of the 3k sputter for some members. Check the link below
https://www.clublexus.com/forums/per...ap-issues.html
Plugs-
https://www.clublexus.com/forums/sc-...lp-please.html
What year is your SC? I read somewhere on later models where there was something about cutting a single black wire on the body plug. This helped some of the 3k sputter for some members. Check the link below
https://www.clublexus.com/forums/per...ap-issues.html
Plugs-
https://www.clublexus.com/forums/sc-...lp-please.html
Last edited by 6SOARER; Feb 20, 2011 at 08:44 PM.
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You mentioned that this just recently happened. How long ago?
What year is your SC? I read somewhere on later models where there was something about cutting a single black wire on the body plug. This helped some of the 3k sputter for some members. Check the link below
https://www.clublexus.com/forums/per...te-issues.html
Plugs-
https://www.clublexus.com/forums/sc-...lp-please.html
What year is your SC? I read somewhere on later models where there was something about cutting a single black wire on the body plug. This helped some of the 3k sputter for some members. Check the link below
https://www.clublexus.com/forums/per...te-issues.html
Plugs-
https://www.clublexus.com/forums/sc-...lp-please.html
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Come to think of it, the car was doing this before I changed the plugs, then ran great for 2-3 days, then started running progressively worse. What effect would going to a 1 step hotter plug have on the car since thats what I did. Would it cause the plugs to foul out quickly? Would a bad PCV valve cause the plugs to go ka-put in 2-3 days time? I know the 1j had that recall for it. I also noticed that there is a bit of white smoke at idle from time to time. Would that be due to the PCV?
I had this problem. I can almost guarantee it's the coilpacks going bad. Pull them out and look for hair line cracks under the blue boots. you are better off replacing all the coilpacks, but they are very pricey.
