My suv wont start

Asked by Chris Nov 11, 2018 at 08:41 AM about the 2002 Mercury Mountaineer AWD

Question type: Maintenance & Repair

I recently had engine light come on. When i
checked the code it came up p1400. I have
since replaced fuel pump, egr valve and dpfe
sensor. The issue is that my suv still wont
start. I can hear the fuel pump do its thing
and also the starter turn the engine..
Vacuum lines seem ok. Electric
wires/connections look good. What else
could it be that it's not starting?

3 Answers
39,465

beatupchevy answered 5 years ago

things should be tested before replacing to save time & $$ , is there spark ? are the injectors firing ? some vehicles are particular about spark and fuel pressure , just having them won't do

Mark helpful
158,225

Bob answered 5 years ago

A bad DPFE sensor will not cause the vehicle to fail to start. You obviously don't have a clue. I would recommend to stop throwing parts at it (very expensive) and take it to your local For dealership's service department for proper diagnosis.

Mark helpful

Chris answered 5 years ago

Sensor was partially broken thus why It was replaced. I've had 2 mechanics so far tell me egr valve is bad. Fuel pump was original and vehicle has 247,138 miles. Pump wasnt making any noise when key was turned on. I had the relay tested and that was good. Fuel sprays out of fuel rail up top. I am currently checking all plugs for spark

Mark helpful

Your Answer:

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