[200q20v] Engine cuts out?

[Brett Dikeman]

At 12:58 PM -0400 10/4/01, ELLIEOLSEN at aol.com wrote:
>Hi list,
>
>My wagon is cutting out under accelleration. I get power back when I 
>lift my foot of the gas, but if I try to accellerate too fast it 
>cuts out again.
>What do you think it could be? Injectors, O2 sensor, TBV , bad fuel.

Any of the above you listed would probably not cause a cut out.

Is it complete, ie, there's suddenly NO engine output?  That's 
sometimes a fuel pump cutoff because of overboost.

If it's more of a violent shuddering, that's sometimes a big vacuum 
leak or other similar problem affecting mixture; under boost, a hose 
with a crack suddenly opens up and leaks a lot of air, boost pressure 
drops, the leak closes, boost builds, etc.  I would pull the codes 
from the ECU and look for a big vacuum leak...check all the clamps on 
the intake system, they should be very tight.  Remove the 
intercooler->intake pipe hose, clean it up, inc on the outside, and 
bend/pull it every which way to look for leaks.  Usually the most 
common leak location is on the bottom side of the hose, where oil 
pools in the folds.



B
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Brett Dikeman
brett at cloud9.[nospam]net
http://www.users.cloud9.net/~brett/
(vm/fax)212-894-3749x5271