intermittent spn 0102 fmi 18 cm871

[jgriffin812]

Found this bad gasket at the back of the egr cooler going towards the soft crossover in the back of the engine.

[jgriffin812]

How sealed is the egr supposed to be when off? I blew into the intake side going towards the exhaust, after cleaning it, and it wasn't sealed. Is there a bench test i can do in it? 3684707 is the egr number.

[jgriffin812]

The ecm is AV10239.15 if that helps with anything.

[Rawze]

(08-31-2026 )jgriffin812 Wrote:  How sealed is the egr supposed to be when off? I blew into the intake side going towards the exhaust, after cleaning it, and it wasn't sealed. Is there a bench test i can do in it? 3684707 is the egr number.

Assuming you live in a foreign country...

== A THICK block plate between cylinder #1 and entrance to EGR cooler.

== A THICK block plate at intake manifold where egr pipe meets it.

== All cans gutted to the bare metal, insulation and all. Exhaust ad free-flowing as possible.

== Fuel line removed and blocked off at the IFSM for the Doser injector, as at some point in its future it will end up leaky from lack of use, and everyone blaming truck on lower then normal fuel mileage all the time.

== Any intake or exhaust butterfly valve(s) flapper removed.

[jgriffin812]

Put it back together and got spn 0102 fmi 18 again, this time my freeze frame stored, spn899 engine torque mode : Torque limiting, spn 102 turbo boost pressure :18.560 psi spn 190 engine speed: 1222rpm ,spn39 engine load %: 39%, coolant temp 176°f

[Rawze]

(08-31-2026 )jgriffin812 Wrote:  Put it back together and got spn 0102 fmi 18 again, this time my freeze frame stored, spn899 engine torque mode : Torque limiting, spn 102 turbo boost pressure :18.560 psi spn 190 engine speed: 1222rpm ,spn39 engine load %: 39%, coolant temp 176°f

Maybe if you end up n the ATL area, look up Mr. Hags (Haggai automotive) and see if they can help you with it.