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  #1  
Old 09-13-2010, 12:38 AM
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Default 4.0 Please help:(

Alright guy's i need some help i have a 93 ford explorer and she's been running great all summer but as usual when the cold get's around all car's start to act up. Well here's issue im having in the warm or hot day run's fine no issues driving at all. Now let's say it's 45degrees or colder out will have problem idiling or when i go to put in reverse or drive it chugs etc...like want's to die. Now i've done number things to this truck. Here's what i have done

*brand new spark plugs/wireset
*Ect(engine coolant temp sensor)
*Iat (Intake air temp sensor)
*Iacv (Idle air control valve)
*Purge valve solenoid(This deff helped with the driving normal issue it was having it run to lean and wouldn't have no ball's at all but i fixed that issue).


Part's ive checked igntion coil sprayed water at night getting no arch or spark. carb spray old skool trick no vaccumm leak's , Maf(mass air flow) check's out good as well.

Now i have read on newer 4.0l sohc motor's lower intake gasket/upper also will do this drivability issue? anyone know if this is right for a 93 i would think so because same motor. Someone please help me this is my daily driver as well and winter will be here soon.
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  #2  
Old 09-14-2010, 02:23 PM
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You've got the 4.0L OHV engine, the SOHC wasn't out until '98, and wasn't known for being as reliable as the OHV.

The OHV engine is typically good into the 250-300k range. Wish I could be more help though.
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Old 09-14-2010, 02:28 PM
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does it have a thermostat? maybe try adding one if it was removed or swappin the ones you got in there



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Old 09-14-2010, 02:30 PM
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Check engine light on?Plastic or aluminium intake?
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Old 09-15-2010, 01:39 AM
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my bad on the sohc to ohv man. as the the intake it is aluminum checked everywhere no crack's or gaskets pushed out. I went and did a vaccuumm test and its fine no spratic needle bouncing or low vaccuumm reading at all. check engine light not on but im sure u know how these obdI's are they don't read much for check engine light's really.
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Old 09-15-2010, 01:51 AM
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what oil are u using? they are touchy when it comes to the weight of oil
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Old 09-15-2010, 02:25 AM
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10w30 motor has 158000 on it.
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Old 09-17-2010, 02:22 AM
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Well guy's found 3 bad wires they clips on wires weren't holdn down. so replaced wires and upgraded to bosh since duralast shitty quality. also found out the plastic intake tube that comes from bottom of the airfilter box was kinked and not running anywhere so i ran it to down under the bumper with some stretchy plastic tubing simmilar to stock one. now same thing warmer weather ran alot better better even how did before. but same bs when it get's cold drops in temp. act's up rpm's start to slowly surge up and down. I even went to ford tell em what was happening and no one could give me an answer.
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Old 09-17-2010, 02:23 AM
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dude you are having so much trouble with this car every time I come on I see another post about something on it
hope your luck changes for the better
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Old 09-17-2010, 02:26 AM
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Quote:
Originally Posted by xander_crews View Post
dude you are having so much trouble with this car every time I come on I see another post about something on it
hope your luck changes for the better
I know right all happened out of no where to. I hate my luck sometimes. but like my girl say's could be alot worse. so i try to look at positive side of things.
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