[V8] Limp Mode?

[Jeremy Ward]

Hey Brad, been there myself.  First thing to do is pull the codes using the
info found on Scott's website:
http://www.sjmautotechnik.com/trouble_shooting/ecufv8.html - very easy to do

I was getting "2243 Consumption Signal" (whatever the heck that means) which
was being thrown due to the TPS not seeing a closed throttle switch.  In my
case the PRND321 lights *didn't* light up; as per the manual this is 1 of 2
circumstances that selector lights all go dim (vs. all being lit).

My root cause - throttle body was filthy, not allowing the butterfly valves
to close all the way, thus not allowing the TPS to register a closed
throttle switch - the ECU / TCU never knew when I took my foot off the gas
and the car surged like when you are driving a 5-spd, are driving with your
foot into the gas, then suddenly let off w/o pushing the clutch in.  This
apparently is what threw my tranny into limp-home after driving a couple of
blocks.  I think I was also getting the "2121 Idle switch" code as well.

Pull the codes and let us know what you find out. :-)

Cheers,

- Jeremy

-----Original Message-----
From: v8-bounces at audifans.com [mailto:v8-bounces at audifans.com] On Behalf Of
Speakoutprod at aol.com
Sent: Tuesday, September 20, 2005 6:55 AM
To: v8 at audifans.com
Subject: [V8] Limp Mode?

Driving to town today, I noticed the V8 was acting sluggish and think it may

have been operating in Limp Mode.  I tried shifting into lower gears (I have

an automatic) but no change.  I then turned the car off, restarted and drove

around the block -- it seem to be working fine.

I've heard of limp mode but never understood its cause nor function.  Should

I seek immediate help from a mechanic or look for an open window in a tall 
building?

Lastly, can you easily check the fluid level in the transmission?  It looks 
like there's only a fill port without a transmission dipstick.

Thanks,

Brad Hartman
1990 V8
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