How long should you wait for all the "excess" fuel to be burned when you cold start?
02-18-2013, 09:47 PM
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How long should you wait for all the "excess" fuel to be burned when you cold start?
How long should you have to wait for all the excess fuel to be burned when it's idling and when driving.
Ex. I want to drive it out of the garage and wash it, how long should I wait to shut it off?
And I looked everywhere for this info and couldn't find anything, so don't blame me if this has been asked!
Ex. I want to drive it out of the garage and wash it, how long should I wait to shut it off?
And I looked everywhere for this info and couldn't find anything, so don't blame me if this has been asked!
02-18-2013, 10:22 PM
#4
weeeeeeeeee
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Get your water temp up to 160F... that's a little over 1/3 of the way across your water temp gauge. To be extra safe get your water temp up to 180F (normal operating temperature) which is a little under 1/2 way across your water temp gauge.
Expect your oil to still not be at operating temperature. It takes another 5 or so minutes for your oil temperature to climb up to nearly match your water temp.
Expect your oil to still not be at operating temperature. It takes another 5 or so minutes for your oil temperature to climb up to nearly match your water temp.
02-18-2013, 10:25 PM
#5
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Yes - I blame you for not having really looked.
Ken
02-18-2013, 10:27 PM
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http://www.mazdausa.com/MusaWeb/pdf/...MazdaRX8QT.pdf
Page 4/5
02-19-2013, 12:19 AM
#8
ive stalled my car before by accident at around 120* and it started back up fine.
02-19-2013, 10:57 AM
#9
02-19-2013, 11:15 AM
#10
Whozz xUr Dady7
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from what i hear, the year of the 8 has a little to do with it. my 07, in and out of the garage with no warming and never an issue. i heard 04 and 05 totally different story.
02-19-2013, 11:28 AM
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To be more precise the "excess fuel" is actually burned along with the implied "normal fuel". The actual question you were going for is "how longuntil the ECU stops injecting extra fuel when cold". The answer to that will vary based on ambient temps, but the ECU stops injecting the extra fuel somewhere around 150-160F. I don't know the precise number, though I do know that running a 160F thermostat on other Mazda ECUs will keep triggering the cold condition maps, so it's probably not too far off for the 8.
Lvis, no, a catch can is to catch oil overflow into the intake. Has no direct connection to the fuel content in the engine.
Lvis, no, a catch can is to catch oil overflow into the intake. Has no direct connection to the fuel content in the engine.
02-19-2013, 01:07 PM
#13
To be more precise the "excess fuel" is actually burned along with the implied "normal fuel". The actual question you were going for is "how longuntil the ECU stops injecting extra fuel when cold". The answer to that will vary based on ambient temps, but the ECU stops injecting the extra fuel somewhere around 150-160F. I don't know the precise number, though I do know that running a 160F thermostat on other Mazda ECUs will keep triggering the cold condition maps, so it's probably not too far off for the 8.
Lvis, no, a catch can is to catch oil overflow into the intake. Has no direct connection to the fuel content in the engine.
Lvis, no, a catch can is to catch oil overflow into the intake. Has no direct connection to the fuel content in the engine.
02-19-2013, 01:25 PM
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With that guidance, I went looking, and found this in the highlights:
Which implies that it needs 160F / 71C for closed loop operation, and implies then that below that it's adding fuel.
Doing word searches on the document I couldn't find any other reference that might be useful to answer the exact question.
P0125 Insufficient coolant temperature for closed loop fuel control
• The PCM monitors the ECT after cold engine start. If the ECT does not reach the specification in a certain
period, the PCM determines that the coolant temperature for closed loop fuel control is insufficient.
P0126 Insufficient coolant temperature for stable operation
• The PCM monitors the ECT after the engine start for a certain period. If the the ECT never exceeds 71 °C {160
°F} when the following conditions are met, the PCM determines that the coolant thermostat is stuck open.
MONITORING CONDITIONS
— Soak time: more than 6 hour
— IAT: more than –10 °C {14 °F}
— Vehicle speed: more than 10 km/h {6.2 mph}
— LOAD: more than 21.9 %
P0128 Coolant thermostat problem
• The PCM calculates the radiator heat radiation ratio while the following conditions are met. If the calculated
value exceeds the threshold, the PCM determines that the coolant thermostat is stuck open.
MONITORING CONDITIONS
— Soak time: more than 6 hour
— IAT: more than –10 °C {14 °F}
— ECT at engine start: less than 35 °C {95 °F}
— Vehicle speed: more than 40 km/h {24.9 mph}
• The PCM monitors the ECT after cold engine start. If the ECT does not reach the specification in a certain
period, the PCM determines that the coolant temperature for closed loop fuel control is insufficient.
P0126 Insufficient coolant temperature for stable operation
• The PCM monitors the ECT after the engine start for a certain period. If the the ECT never exceeds 71 °C {160
°F} when the following conditions are met, the PCM determines that the coolant thermostat is stuck open.
MONITORING CONDITIONS
— Soak time: more than 6 hour
— IAT: more than –10 °C {14 °F}
— Vehicle speed: more than 10 km/h {6.2 mph}
— LOAD: more than 21.9 %
P0128 Coolant thermostat problem
• The PCM calculates the radiator heat radiation ratio while the following conditions are met. If the calculated
value exceeds the threshold, the PCM determines that the coolant thermostat is stuck open.
MONITORING CONDITIONS
— Soak time: more than 6 hour
— IAT: more than –10 °C {14 °F}
— ECT at engine start: less than 35 °C {95 °F}
— Vehicle speed: more than 40 km/h {24.9 mph}
Doing word searches on the document I couldn't find any other reference that might be useful to answer the exact question.
Last edited by RIWWP; 02-19-2013 at 01:28 PM.
02-20-2013, 11:47 AM
#15
With that guidance, I went looking, and found this in the highlights:
Which implies that it needs 160F / 71C for closed loop operation, and implies then that below that it's adding fuel.
Doing word searches on the document I couldn't find any other reference that might be useful to answer the exact question.
Which implies that it needs 160F / 71C for closed loop operation, and implies then that below that it's adding fuel.
Doing word searches on the document I couldn't find any other reference that might be useful to answer the exact question.
works for me!
03-06-2013, 12:43 PM
#16
I don't "smell good".
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Make sure you have at least the MSP16 Flash
Healthy Ignition System.
With those two things flooding is near impossible. That's all there is to it.
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