Re: pinging 97 Taurus
your egr valve is probably not working. slightly stuck open can cause rough
idle and no egr opening under load can cause pinging. that car uses
ignition timing and egr to eliminate predetionation. manually open the egr
valve with the motor under load and see if the ping stops. the system has a
dpfe (egr position) sensor, egr solenoid, and egr valve. if any bad should
set a code and check engine light but some times things don't work as they
should. that motor is made to run with no additional benifit from any
higher that 87 octane. If higher octane apears to fix the problem you
probably have deposit buildup on top of the pistons wich a good combustion
cleaner (not anything you add to the fuel tank, any good cleaner is not good
to set in the fuel system for days)can take car of.
"Teknical" <email@example.com> wrote in message
> My 97 Taurus 3.0 Vulcan is pinging under load. No codes, no Check Engine
> light, idle seems to be slightly rough with the warmer weather. I use good
> gas always from the same station.
> I did plugs, wires, and all filters about 9 months ago (~8,000 miles), and
> run mobil1 synthetic & Purolator oil filters.
> What should I be looking for?