03-26-2014, 01:23 PM
yes, all that is true, but temp is 180,, and engine load means, alternator load at idle. and it controls engine speed not the reverse. (at idle hot)
sure as battery voltage drop the duty cycle is increase to correct this error. (all this is transparent)
the ECU uses the ISC (IAC in some books but you must have a name for both, IAC electric and IAC thermal works)
but the ECU uses it to hold RPM at 800 or 1000 for A/C on, or P/s overload.
sure it stopped, but more important what was the RPM pinched, this tell me the total air leaks.
the ISC can not close more that 100% so if there is an air leak causing 200O RPM , it can not get to 800 , it can only close the valve and note that it fails, and tries over and over.
what RPM pinched hot.? 400? if not you have air leaks,
and did the ISC (iac electric) with the connector pulled give you the same RPM , but not pinched? the valve closes unplugged, so SAME RPM. (mine does 400 RPM) .
what RPM?
if you block all paths , there is no more air, and cant run, i saw one guy block all paths and it idled at 600 rpm. he never got that point, gee hows it getting air with no paths for air.
You have air leaks. The hunting is a victim. its not the problem its only a side show, fix the leaks. or calibrated it for the leaks, (the bleed does just that)
there are only 3 more paths normal.
1 down 3 to go. per above.
all i do is block them 1 by 1 to see if any leak.
IAC (thermal) in the Throttle body most not leak hot, or it's bad. if it leaks bad the ISC (electic) will fail totally or at odd moments. (like yours does)
the bleed must not be wide open, close it. see if it stops the hunt.
and make sure the butterfly is closed , TV valve.
if
sure as battery voltage drop the duty cycle is increase to correct this error. (all this is transparent)
the ECU uses the ISC (IAC in some books but you must have a name for both, IAC electric and IAC thermal works)
but the ECU uses it to hold RPM at 800 or 1000 for A/C on, or P/s overload.
sure it stopped, but more important what was the RPM pinched, this tell me the total air leaks.
the ISC can not close more that 100% so if there is an air leak causing 200O RPM , it can not get to 800 , it can only close the valve and note that it fails, and tries over and over.
what RPM pinched hot.? 400? if not you have air leaks,
and did the ISC (iac electric) with the connector pulled give you the same RPM , but not pinched? the valve closes unplugged, so SAME RPM. (mine does 400 RPM) .
what RPM?
if you block all paths , there is no more air, and cant run, i saw one guy block all paths and it idled at 600 rpm. he never got that point, gee hows it getting air with no paths for air.
You have air leaks. The hunting is a victim. its not the problem its only a side show, fix the leaks. or calibrated it for the leaks, (the bleed does just that)
there are only 3 more paths normal.
1 down 3 to go. per above.
all i do is block them 1 by 1 to see if any leak.
IAC (thermal) in the Throttle body most not leak hot, or it's bad. if it leaks bad the ISC (electic) will fail totally or at odd moments. (like yours does)
the bleed must not be wide open, close it. see if it stops the hunt.
and make sure the butterfly is closed , TV valve.
if
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