Downshifts while coasting...

From: Brian Schultz (xstatic@pacbell.net)
Date: Mon Jun 15 1998 - 02:02:18 EDT


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Has anyone had this problem....
'98 V8 4x4 4 speed auto...While in cruise control at 70 mph I push =
"coast" to slow a little bit. What does the truck do...? It downshifts. =
I take it out of cruise control and whenever I let off a bit, it =
downshifts! Just happened that once, I can't seem to duplicate it now. =
The air filter was a little dirty, since I was 4-wheelin in the desert =
that day. The only thing I can think of is that the pressure drop thru =
the filter was such that the vacuum modulator interpreted the low =
pressure as a throttle increase and downshifted accordingly. I changed =
to a K&N the next day and it hasn't happened since. Was kinda wonderin' =
if anybody has had a similar experience....?

Brian Schultz
Carlsbad, CA

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<DIV><FONT color=3D#000000 size=3D2>Has anyone had this =
problem....</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2>'98 V8 4x4 4 speed auto...While in =
cruise=20
control at 70 mph I push "coast" to slow a little bit. What =
does the=20
truck do...? It downshifts. I take it out of cruise control and whenever =
I let=20
off a bit, it downshifts! Just happened that once, I can't seem to =
duplicate it=20
now. The air filter was a little dirty, since I was 4-wheelin in the =
desert that=20
day. The only thing I can think of is that the pressure drop thru the =
filter was=20
such that the vacuum modulator interpreted the low pressure as a =
throttle=20
increase and downshifted accordingly. I changed to a K&N the next =
day and it=20
hasn't happened since. Was kinda wonderin' if anybody has had a similar=20
experience....?</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT> </DIV>
<DIV><FONT color=3D#000000 size=3D2>Brian Schultz</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2>Carlsbad, =
CA</FONT></DIV></BODY></HTML>

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