strange idling
#1
strange idling
'02 4.7 4wd. Hey guys. When started cold my D idles up and down from 1,500 rpms down to around 650. It goes away as she warms up but that's not all. When fully warm she'll occaisionally fluctuate between 500 and 1,300.
There seems to be no pattern. Just out of nowhere she'll start doing this, sometimes quickly and sometimes the tach will sit still around 850-900.
New IAC and throttle body cleaned, new cam sensor, crank sensor, ecm, ign switch.
No vac leaks as far as I can tell. No engine light or codes at all.
Any ideas? I'm pretty stumped.
There seems to be no pattern. Just out of nowhere she'll start doing this, sometimes quickly and sometimes the tach will sit still around 850-900.
New IAC and throttle body cleaned, new cam sensor, crank sensor, ecm, ign switch.
No vac leaks as far as I can tell. No engine light or codes at all.
Any ideas? I'm pretty stumped.
#3
#4