no power

[Doyt W. Echelberger]

I'd probably suspect throttle switch failure as one possibility. It may not
be working correctly when you put the pedal to the floor and demand
wide-open throttle..... Especially true if it is the original throttle
switch. They have a reputation for failure of the internal solder joints.

I'd also check the wires that come into the distributor, to see that they
haven't been mal-positioned at the actual entry point to the dizzy. You say
you replaced the cap and rotor, and a mal-positioning could have taken
place at that time.  I'd also check to see if any of the ignition wires are
partially pulled out of their snug fit into the cap or even the main high
voltage wire from the coil module. Also, examine the cap ends of each
ignition wire, and see if they are green/corroded/burned or loose. At one
time or other, each of these things have made my car run as you describe.

In closing, I will mention that I did not see any reference to checking the
air filter for dirt, water, or other possible materials that might obstruct
or limit it's ability to deliver adequate air. In fact, I would think that
the entire air induction system including the intercooler deserves to be
inspected for obstructions and leaks. Others have addressed the Michelin
Man hose.

Doyt Echelberger
87 5ktq

 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
At 10:06 AM 4/13/2002 -0600, you wrote:
>Please help me figure out what to test next.  My 87 5000cstq was running
>great- then a slight miss at low rpm high load -then terrible misses and
>no power at all.   When throttle wide open no boost and no power and a
>violent vibration . I have done the following and have not resolved
>problem-  compression check-100 psi at 8000 ft .  no vacuum leaks - took
>all hoses and  intercooler off and checked for leaks,  changed rotor and
>cap- all cylinders have spark at least thru wires as shown by timing
>light on each one.  cam timing mark at proper point when tdc.
>Took front cat off and no evidence of plugged nor melted- I am assuming
>downstream not restricted,  turbo does not have excessive play and does
>spin free by hand.  fault code 4444 only-(no faults)  What am I
>missing?????  Thanks---- John Dyer
>