engine stalling now wont start

[papoxlt]

ive got 93 explorer and the engine stalls out on me there is no check engine light on ,ive change the iac valve ,tps,maf ,when i do get it to start it would run but i could not step on the gas becouse it would back fire then it would stall out ,i gave it a tune up plugs ,wires,fuel filter ,my book refers to egr valves but ive look every where on my engine i just cant see it or it does not have one,when i started it engine cold and as it warmed up it would start to stumble if you leave runnig for longer it would stall and it wont start for a while.

 

[wood1]

I thought EGR's started in '94?

Timing issue? Plug wires crossed up?

 

[Buffalosports]

I was going to say that maybe your distributor was shot but that usually is a problem at start up. Usually as the engine warms up, it works better. Maybe something to look into though.

 

[papoxlt]

i dont have distributor i have the coil pack,if they started egrs on 94 thats why i cant find it, could a clogged catalytic do this

 

[Buffalosports]

Yea I meant the coil but AutoZone still refers to them as distributors.

 

[wood1]

Shouldn't, normally they'll idle OK but feel like you're towing a loaded transport truck...

pop a O2 sensor out and hook up a pressure gauge if you think it's the cat... should not be very much pressure,

I wonder about the crank sensor?

 

[papoxlt]

i changed all the sensors on it,but my mil light should go on if one my sensors was to be bad, and my while they where changing my fuel filter they broke the fuel line any suggestiopns other than dealer

 

[Matt Fisher]

Welcome to my world: http://www.explorerforum.com/forums/showthread.php?t=211302

Btw- some 93's did come with EGR valves, but not all.

 

[papoxlt]

i have fuel coming up and sparkno codes in the computer ive change all the sensors that have anything to do with ignition or fuel still the same ,so im wondering if i have a clogged catalytic would push the exhaust fumes back into the engine and cause it to stall out.

 

[papoxlt]

im getting engine code 34

 

[MrShorty]

Should be getting 3 digit codes on a '93. Double check how you read the codes to make sure they are being read correctly.

 

[papoxlt]

ive got the engine to start but know as soon as the engine warms up it starts bogging until it stalls out and i wont be able to start it againg until it cools down ,still with no engine codes

 

[wood1]

Are the cat converters getting hotter then they should be?

I've seen clogged converters glow... If they are badly plugged you would have issues like this. You could un-hook the converters and run an open exhaust for the purposes of diagnosis. That's what I woud try.