still running rich... - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

formeRiceR · 03-22-2004, 12:11 PM

So I'm still running rich and I still don't know why?
My idle is still around 850-900 RPM

Here are some guesses:

1, My voltage for my TPS is at 1.45 kohms at closed throttle is that normal for a S!4 built in 7/94. I heard it was 2 kohms then I heard it was 1 kohms. So I'm somewhat confused about that.

2, So friday I was underneath the car and a turns out that my car does have 2 O2 sensors, well I think it is a O2 sensor. it's before the dummy cat and is on that long pipe. Is that a O2 sensor ??? I should probably swap that out right?

3, Coolant sensor, so when I first had the car when the car was all warmed up the temp gauge would be in the middle. Now a days even if I drive hard the needle stays on the lower end of the gauge. I'm wondering if this is the coolent sender being screwed or if it's my thermostat or something? Can a thermosat be stuck open??? I know they can be stuck closed...

4, Could it also be my timing...??

Also, MAFS reads good and no ECU codes are popping...

Yoshi · 03-22-2004, 02:59 PM

Quote:

Originally Posted by formeRiceR

So I'm still running rich and I still don't know why?
My idle is still around 850-900 RPM

Here are some guesses:

1, My voltage for my TPS is at 1.45 volts at closed throttle is that normal for a S!4 built in 7/94. I heard it was 2 volts then I heard it was 1 volt. So I'm somewhat confused about that.

2, So friday I was underneath the car and a turns out that my car does have 2 O2 sensors, well I think it is a O2 sensor. it's before the dummy cat and is on that long pipe. Is that a O2 sensor ??? I should probably swap that out right?

3, Coolant sensor, so when I first had the car when the car was all warmed up the temp gauge would be in the middle. Now a days even if I drive hard the needle stays on the lower end of the gauge. I'm wondering if this is the coolent sender being screwed or if it's my thermostat or something? Can a thermosat be stuck open??? I know they can be stuck closed...

4, Could it also be my timing...??

Also, MAFS reads good and no ECU codes are popping...

um... KA? SR? KAT?

formeRiceR · 03-22-2004, 03:44 PM

ka w/ intake and exhaust

Yoshi · 03-22-2004, 10:01 PM

has your car always idled that high?
does it surge?

o2 sensor would be my first guess

03-22-2004, 12:11 PM	#1
formeRiceR Zilvia Member Join Date: Dec 2001 Location: Mass Age: 43 Posts: 280 Trader Rating: (0) Feedback Score: 0 reviews	still running rich... So I'm still running rich and I still don't know why? My idle is still around 850-900 RPM Here are some guesses: 1, My voltage for my TPS is at 1.45 kohms at closed throttle is that normal for a S!4 built in 7/94. I heard it was 2 kohms then I heard it was 1 kohms. So I'm somewhat confused about that. 2, So friday I was underneath the car and a turns out that my car does have 2 O2 sensors, well I think it is a O2 sensor. it's before the dummy cat and is on that long pipe. Is that a O2 sensor ??? I should probably swap that out right? 3, Coolant sensor, so when I first had the car when the car was all warmed up the temp gauge would be in the middle. Now a days even if I drive hard the needle stays on the lower end of the gauge. I'm wondering if this is the coolent sender being screwed or if it's my thermostat or something? Can a thermosat be stuck open??? I know they can be stuck closed... 4, Could it also be my timing...?? Also, MAFS reads good and no ECU codes are popping... __________________ "Street racers don't need girls." -Lonely Driver Learning about cars one FLAME at a time ... (thanks to TNORD) Last edited by formeRiceR; 03-22-2004 at 05:25 PM..

03-22-2004, 03:44 PM	#3
formeRiceR Zilvia Member Join Date: Dec 2001 Location: Mass Age: 43 Posts: 280 Trader Rating: (0) Feedback Score: 0 reviews	ka w/ intake and exhaust __________________ "Street racers don't need girls." -Lonely Driver Learning about cars one FLAME at a time ... (thanks to TNORD)

03-22-2004, 10:01 PM	#4
Yoshi Post Whore! Join Date: Jul 2001 Location: Washington Age: 48 Posts: 3,003 Trader Rating: (1) Rides Gallery: Yoshi Feedback Score: 1 reviews	has your car always idled that high? does it surge? o2 sensor would be my first guess