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FORGOT TO SCAN THE PCM I SEE.
check all fuses.?
not told
fails hot and cold engine or both
car must be in transmission DRIVE selected? right?
and foot off gas pedal (accelerator)_ rpm goes to 2000 or up to 6000 rpm . and or
so driving foot off the pedal and RPM goes too high
or in drive, I step on the throttle (gas) and RPM shoots way high
and Never leaves 1st gear. that is transmission failures.
in DRIVE.
if rpm also goes that high right foot doing nothing and in park
that is engine idle control's failing.
we can not see you drive or how. so answers can be a tad hard.
in what gear? PRNDL (choices)
right foot doing what?
and what SPEED is too slow 20 or 85mph? or?
does tranny fail to upshift?
www.elcovaforums.com > ... > General H3 Discussion
Sep 15, 2005 - 24 posts - 17 authors
rattling sound inespected in my hummer because ... go uphill or press on the gas pedal to ... same time up to 2500 rpm on my H3. .... Buzz or Rattle Noise While DrivingUnder Load from the Exhaust ... 2006 Hummer H3
Hi Rodrigo, The idle control is activated by the temperature sender unit. It sounds as though yours is giving a cold signal to the computer and it pushes up the idle speed to compensate as if it has just started. The sender unit is a different unit from that which operates the gauge on the dash instrument panel. Replace it and I believe your problems will be over.Regards John
that is a possibility. is this a guarantee to fix? if he has done the proper diagnostics and he is guarantee the repair then this would be logical. but no fix no pay. dont let it turn into something else and something else. hope this helps
Could be several things.. I would suggest replace the neutral safety switch, all O2 sensors and fuel and air filters, PVC valve and if needed plugs n wires..
The issue could also be a bad throttle body.. Should be a good idea to get it hooked up to a diagnostic machine - get the codes and then you will know more of what you are dealing with..
i have a 1986 chevy corvette, when you fist start the motor it idel fine, when it wormes up, it ideling rough and RPM jumps up and down, and you can smell gas when you fist statrt it but there is no leaks,also when your driving about 45mph it puags down until you push it and then runs fine. please help me with this issue.
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