1j Breaking up around 5500 to 6500 RPM

TripleC · 12-04-2009, 02:45 PM

I drove it yesterday and it was just fine once the car and tires warmed up. i think i was mainly hitting the max boost and spinning the tires cause of the cold. anyhow i am sure it is kind of a precursor to what will soon happen so i will keep this in mind when it happens more often.

cre · 12-04-2009, 08:29 PM

There is no reason at all that you would hit fuel cut due to just a temperature drop or from spinning the tires.

TripleC · 12-04-2009, 08:55 PM

Well it seems to be ok today! Pulls just fine but i did not go over 6200 RPM when i drove it at lunch time. Do you think it could be the Spark Plugs and an issue with gap??

cre · 12-04-2009, 09:24 PM

Heh, if it was a 7M, I'd say you're hitting the rev limiter... but unless you're running 7M electronics...

A gap issue could definitely cause such problems, but it's not something which just happens spontaneously. As I said before, a spark issue is very likely though, so checking for fouling and yes, even checking the gap is definitely at the top of the list.

TripleC · 12-04-2009, 09:28 PM

No 7M stuff just a 1jz ECU for NOW! do you know anyone with a set of 440 injectors sitting around?

cre · 12-04-2009, 09:33 PM

I've got a couple sets, but they're all top feed.

TripleC · 12-04-2009, 09:37 PM

BOOOOOOOOOOO this man BOOOOOOOO

12-04-2009, 09:37 PM	#7
TripleC 3" Exhaust Join Date: Nov 2009 Location: Fort Collins, CO Posts: 103	BOOOOOOOOOOO this man BOOOOOOOO __________________ 1JZGTE ,R154, Hallman Boost Controller, HKS bov, HKS Mushroom top Air Filter, HKS Front Mount Intercooler, Greedy Turbo Timer, PLX300 AFC, Custom Divorced Y-pipe, Custom Intercooler Pipeing, RS-R Concept Exhaust, Optima Red Top Battery, Strut bar Brembo Rotors, A1 Traction arms, Megan Coilovers, Stern ST 2 wheels rear 265x30 r19 - front 245x35 r19, New Front Lip, 18 x 8 and 18 x 9 MRR HR2 with whatever for Drift treads 2 additional C12A turbo's(Extra)

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12-04-2009, 02:45 PM	#1
TripleC 3" Exhaust Join Date: Nov 2009 Location: Fort Collins, CO Posts: 103	I drove it yesterday and it was just fine once the car and tires warmed up. i think i was mainly hitting the max boost and spinning the tires cause of the cold. anyhow i am sure it is kind of a precursor to what will soon happen so i will keep this in mind when it happens more often.

12-04-2009, 08:29 PM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	There is no reason at all that you would hit fuel cut due to just a temperature drop or from spinning the tires.

12-04-2009, 08:55 PM	#3
TripleC 3" Exhaust Join Date: Nov 2009 Location: Fort Collins, CO Posts: 103	Well it seems to be ok today! Pulls just fine but i did not go over 6200 RPM when i drove it at lunch time. Do you think it could be the Spark Plugs and an issue with gap??

12-04-2009, 09:24 PM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Heh, if it was a 7M, I'd say you're hitting the rev limiter... but unless you're running 7M electronics... A gap issue could definitely cause such problems, but it's not something which just happens spontaneously. As I said before, a spark issue is very likely though, so checking for fouling and yes, even checking the gap is definitely at the top of the list.

12-04-2009, 09:28 PM	#5
TripleC 3" Exhaust Join Date: Nov 2009 Location: Fort Collins, CO Posts: 103	No 7M stuff just a 1jz ECU for NOW! do you know anyone with a set of 440 injectors sitting around?

12-04-2009, 09:33 PM	#6
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	I've got a couple sets, but they're all top feed.