Fuel traces in EGR Valve.

[fixkick]

black smoke is wrong, dead wrong. on this EFI car. at tail pipe. white is a whole other matter (steam or oil burning)

do the ECT test first?
get engine hot.
180f is standard thermostat rating, be wise not to run any 23 year themostat. 5 years/. par, 10 max. depends if daily driven or 1 per week
with engine fully hot.
stop it engine, key off , work fast, 15min time frame.
remove the ect connector from ECT sensor (2pin sensor ) but not the IAT sensor nor the AC overheat sensor no.
do not force the ect connector lock, squeeze the locking lever and pull gently and wiggle it out.
then with any DMM in hand select OHMS mode. test the 2 pins for 300 ohm hot. test probes land on ECT naked pins , at ECT side.
id never trust any 23 year old ECT. nor thermostat.
In Europe finding the right ECT can be a pain, with 4 engine types that year.

ECT test 2, more easy, but I use back probing needles.
if you know how to back probe connectors.
back probe the sensor ECT enigine running normal hot, and see 0.65vdc.
any voltage higher is a bad thermostat or bad Ect. (WE USE AN IR THERMO GUN TO KNOW WHICH IT IS)

We can do this 1 test at time, no problema.


horror #1 this car this year, the horror of strange intake manifold
more exactly the the old and new, manifolds changed
the DEEP thermstat housing must match the correct, thermostat.
using the old why will fail.
covered fully here
http://www.fixkick.com/Cooling-engine/Fr...r-cab.html


the 4mm lip,must use a rubber ring, seal of the thermostat floats and goes crazy, or runs cold.