[Shotimes] '90 SHO produces no torque.

[Kirk Doucette]

Do you live in Cali? If not take the EGR off and get yourself a non-egr
computer.  I think Porter has hit it on the head, the only other thing I
might suggest is the Cats ( Y-Pipe) have a blockage. Easy way to tell is
unbolt the y and re fire it

Kirk J Doucette
NESHOC President
Stormtrooper-97 White

-----Original Message-----
From: shotimes-admin@autox.team.net [mailto:shotimes-admin@autox.team.net]On
Behalf Of Leigh Smith
Sent: Tuesday, October 14, 2003 10:19 PM
To: mthaggard@earthlink.net
Cc: shotimes@autox.team.net
Subject: Re: [Shotimes] '90 SHO produces no torque.

A little bit of history might help. Has any tune-up work been done
recently? Belts, etc? Problem recent or developed slowly? Any codes? Any
noises?

Sounds way lean. Could be vacuum leak, bad O2 sensor, bad IAB, retarded
timing, crank cancer, timing belt on wrong, manifold gasket leak, dirty
MAF, bad MAP, cracked EGR feed tube, plugged EGR passages in manifold,
etc. etc. Mine was a vacuum leak on the cruise control dump valve by the
brake pedal! Cruise would n't work either. Many of these issues will not
throw a code.

Lee


Matthew Haggard wrote:

>Hey,
>
>I'm having an interesting problem, interesting being defined as anything
upleasant, once it's over.  I have a 90 SHO,well technically 2, but the
physically ugly one runs perfectly.  The "pretty" one's check engine light
comes on.  Code reader says that it's the EGR partly open.  I've replaced
the valve, no good.  I'm about to take off the manifold and clean it out,
but problem seems to be more extreme than egr problems could acount for.  In
a nutshell, no power.  Nada, zilch, zip.  It idles ok, but snapping the
throttle results in it slowly revving up, followed by nearly dying as it
dips to a couple hundred rpm, then recovering.  It doesn't make enough power
to make it up my driveway.  Maybe a 4% slope.  It doesn't have any trouble
starting really, except that it doesn't rev up like the other one when it's
cold, but I've seen tricycles with more torque and I'm talking the kid
powered kind.  I've replaced the O2 sensors, justifying it as routine
maintenance to myself.  I've !
c!
>hecked the act sensor and swapped MAF with the other sho, clearing the Keep
Alive Memory each time.  In each drivability test, usually a :30 minute
loop, it runs ok on level ground albeit gutless, but I have to get the truck
to tow it up the hill to my house.  Aftermarket engine parts are a SHO
Shoppe Y-pipe and cat-back system and a K&N Air filter.  If anyone has any
ideas at all where to go from here, I'll be eternally grateful and all the
hair I've pulled out in frustration might actually grow back.
>
>
>Matthew Haggard
>mthaggard@earthlink.net
>There is a certain satisfaction in feeling that you are bearing, with
heroic
>resignation, the irritating folly of others.
>-Jerome K. Jerome
>"Passing of the Third Floor Back"
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