Winter starting, tips and false OBDII code
November 17th, 2021, 5:23 PM
#1
Winter starting, tips and false OBDII code
The 2001 doesn't have "first crank start" electronics like newer vehicles (thank goodness!)
The way you start a "older" car or snowblower or bike is to crank it a few (ie, 2-3 revs then key off not 5 which is called "over-cranking") (summer or winter but especially winter), let it sit for 5 seconds, crank it a few. A car will very likely start on the first rev if you do this and it is easier on both starter and battery.
PROBLEM: sometimes the "old brain" throws P0440 and some ABS code (can't remember) at < 500 RPM freeze framed. it expects "cold start" and if that already occurred and was shut off, the computer falsely indicates trouble codes.
The answer is: the brain is stupid. Reset the codes if they occur during multiple key-on key-off. Use a cheap OBDII reset tool is required if you "know how to start engines correctly".
(yes I'm a mechanic i'm aware of fuel pressure and vaccum tightness issues. older cars can crank say 5+ times in some conditions even if those are newly replaced, and reguarless are harder start in winter than "new cars". the new cars of course come with a huge penalty of $$$$$ complexity and replacement part cost)
The way you start a "older" car or snowblower or bike is to crank it a few (ie, 2-3 revs then key off not 5 which is called "over-cranking") (summer or winter but especially winter), let it sit for 5 seconds, crank it a few. A car will very likely start on the first rev if you do this and it is easier on both starter and battery.
PROBLEM: sometimes the "old brain" throws P0440 and some ABS code (can't remember) at < 500 RPM freeze framed. it expects "cold start" and if that already occurred and was shut off, the computer falsely indicates trouble codes.
The answer is: the brain is stupid. Reset the codes if they occur during multiple key-on key-off. Use a cheap OBDII reset tool is required if you "know how to start engines correctly".
(yes I'm a mechanic i'm aware of fuel pressure and vaccum tightness issues. older cars can crank say 5+ times in some conditions even if those are newly replaced, and reguarless are harder start in winter than "new cars". the new cars of course come with a huge penalty of $$$$$ complexity and replacement part cost)
November 18th, 2021, 9:21 AM
#2
can't say i ever seen or heard of that. My 2000 starts as good as any 2021.
what first start crank electronics are you referring to?
p0440 is a 2 trip code. no obd monitor run during start up so i'm not following. please clarify.
ABs dtc can set if battery voltage is to low are start up
what first start crank electronics are you referring to?
p0440 is a 2 trip code. no obd monitor run during start up so i'm not following. please clarify.
ABs dtc can set if battery voltage is to low are start up
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