Originally Posted by Peabody
Have you replaced the fuel filter? ......... I'd also check all of the emissions related parts (EGR and all the little vacuum hoses on the parts around it). The cat might be worth looking at too, as you mentioned.

And I agree with Everet - fix the heater core at the earliest opportunity.


Changed fuel filter. Heater core bypassed.

Does this model have an EGR? I see a regulator on the fuel rail, but no EGR. If I'm reading right, some years have one, some don't.