sr runs rich wont rev past 3500 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

blazin_teg · 11-20-2007, 01:15 PM

I recently installed a s13 sr20det blacktop in my 240sx. When I crank it up it runs very rich. I will smooth out when I unplug the maf sensor. I have tried a new maf, a new coolant temp sensor, another ecu, and checked for boost leaks. When I plug in the maf it runs very rich and lumpy. I drove it down the road and when it gets around 3000rpms it feels like it wants to pick up and go but when it hits 3500 it shuts down. If anyone has any ideas please let me know.

tony96240sx · 11-20-2007, 01:18 PM

sounds like a maf wiring issue..check for boost leaks also..make sure all the intercooler hoses are connected tight

Okinawandrifter87 · 11-20-2007, 02:02 PM

what he said.. msglngth

*DALAZ_68* · 11-20-2007, 02:09 PM

i thought the whole limp loop (no MAF connected or bad MAF) was set to only rev up to 2500rpm...or is that on KA's only

blazin_teg · 11-20-2007, 02:14 PM

Well I found out the prob. maf ground wire wasnt ran to the ecu right. Now I have to put my sr fpr and get a better fuel filter its showing signs of lean up high. But I finally got it running now. Thanks

unicoladron · 11-20-2007, 02:39 PM

^--yo make sure you get a Z32 Fuel filter, preferably OEM Nissan.

11-20-2007, 01:15 PM	#1
blazin_teg Join Date: Sep 2007 Location: Columbus, MS Age: 38 Posts: 8 Trader Rating: (0) Feedback Score: 0 reviews	sr runs rich wont rev past 3500 I recently installed a s13 sr20det blacktop in my 240sx. When I crank it up it runs very rich. I will smooth out when I unplug the maf sensor. I have tried a new maf, a new coolant temp sensor, another ecu, and checked for boost leaks. When I plug in the maf it runs very rich and lumpy. I drove it down the road and when it gets around 3000rpms it feels like it wants to pick up and go but when it hits 3500 it shuts down. If anyone has any ideas please let me know.

11-20-2007, 02:02 PM	#3
Okinawandrifter87 Post Whore! Join Date: Jun 2006 Location: Sacramento, CA Posts: 3,959 Trader Rating: (22) Feedback Score: 22 reviews	what he said.. msglngth __________________ Driftphreak87

11-20-2007, 02:39 PM	#6
unicoladron Zilvia Junkie Join Date: Jul 2007 Location: Long Island, NY Age: 40 Posts: 568 Trader Rating: (0) Feedback Score: 0 reviews	^--yo make sure you get a Z32 Fuel filter, preferably OEM Nissan. __________________ 1993 KA24DE for sale with 180k..running when pulled.... need to get rid of ASAP...i'm moving

11-20-2007, 01:18 PM	#2
tony96240sx Zilvia Member Join Date: Oct 2007 Location: NYC Age: 47 Posts: 172 Trader Rating: (0) Feedback Score: 0 reviews	sounds like a maf wiring issue..check for boost leaks also..make sure all the intercooler hoses are connected tight

11-20-2007, 02:09 PM	#4
DALAZ_68 not giving a fuck Join Date: Apr 2007 Location: Los angeles Age: 38 Posts: 15,077 Trader Rating: (104) Feedback Score: 104 reviews	i thought the whole limp loop (no MAF connected or bad MAF) was set to only rev up to 2500rpm...or is that on KA's only

11-20-2007, 02:14 PM	#5
blazin_teg Join Date: Sep 2007 Location: Columbus, MS Age: 38 Posts: 8 Trader Rating: (0) Feedback Score: 0 reviews	Well I found out the prob. maf ground wire wasnt ran to the ecu right. Now I have to put my sr fpr and get a better fuel filter its showing signs of lean up high. But I finally got it running now. Thanks