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93 bronco, 5.8L
Basically whenever there is a decent amount of moisture in the air, after it rains, or when it goes from below freezing to above freezing, it seems to be flooded or have a real rough initial idle after start until I can clear out the engine with some long revving. Also in the winters, first cold start of the day usually shuts back off after a couple seconds, start up a second time and it stays just fine.
Thinking maybe cleaning fuel injector. Not really any other problems with running other that that initial start with moisture.
Anyone else ever have this problem? Solution?
 

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Yo Thejuiceisloose69,
Welcome!
Try a Self Test for Diagnostic Trouble Codes by my pal, BroncoJoe19 @ Code Reader.....

PCM stores the Self-Test program in permanent memory. When activated, Self-Test checks the EEC system by testing memory integrity and processing capability, and verifies that various sensors and actuators are connected and operating properly.

Inspect the air cleaner and inlet ducting to throttle body.

Check all engine vacuum hoses for damage, leaks, cracks, blockage, proper routing, etc.
See my Vacuum leak test in post #11 incl jowens126 HVAC Control Panel info & Mikey350 tests @ Help with dtc codes and idle
When vacuum leaks are indicated, search out and correct the condition. Excess air leaking into the system will upset the fuel mixture and cause conditions such as rough idle, missing on acceleration, or burned valves. If the leak exists in an accessory unit, such as the power brake, the unit will not function correctly. Or Air Conditioning when in MAX mode may switch to Defrost.

Check EEC system including the wiring harness for proper connections, bent or broken pins, corrosion, loose wires, proper routing, etc.
Check the Powertrain Control Module (PCM), sensors and actuators for physical damage, such as IAC, TPS, ICM, MAP,, etc.
IAC aka IAB in on forward driver side of intake manifold
View attachment 160388

Throttle Position Sensor (TPS)
View attachment 160389

Ignition Control Module (ICM)
View attachment 160390
is mounted on side of distributor

MAP
View attachment 160391
is mounted of firewall, passenger side
Check the engine coolant for proper level and mixture.
Check the transmission fluid and engine oil level and quality. Make all necessary repairs before continuing with SELF TEST.

The engine temperature must be greater than 50° F for the Key On Engine Off (KOEO) Self-Test and greater than 180° F for the Key On Engine Running (KOER) Self-Test. Run it around to heat the engine up and shift thru all gears including Reverse. Make sure A/C is off and transmission is in Park (automatic); or in Neutral for a Manual and; release clutch. Then turn off engine, all accessories/lights (close driver's door) , etc.

Do KOEO test First. Post Code(s) here according to KOEO and KOER.
A helper can assist you by counting the codes. Some use their smart phones to record them.

BEWARE OF FAN, BELTS, PULLEYS, HOT HOSES, IGNITION HIGH TENSION WIRES, AND ENGINE COMPONENTS⚠
Or ask local mom and dad parts stores if they will test it for you.
Or purchase a coder reader such as Equus 3145 Innova OBD I Code Reader for Ford EEC IV Engines at Walmart & most parts stores.


●□●
Was speed control, if equipped, recall work completed? Check @ Recalls Look-up by VIN (Vehicle Identification Number); or @ Welcome to Ford Owner | Official Ford Owner Site; or ... have VIN ready. While there, see most Ford dealer maintenance/repairs done @ any dealership nation-wide.
"Summary: ON CERTAIN PICKUP TRUCKS, PASSENGER VEHICLES, SPORT UTILITY VEHICLES, AND MOTOR HOMES CHASSIS, THE SPEED CONTROL DEACTIVATION SWITCH MAY, UNDER CERTAIN CONDITIONS, LEAK INTERNALLY AND THEN OVERHEAT, SMOKE, OR BURN. THIS COULD RESULT IN AN UNDERHOOD FIRE."
See this guide by jowens1126 to confirm recall status @ 93 & 94-96 Cruise Control Recalls Repair
Note that the 93 recall is different than 94-96.

For any Bronco questions or to chat about desired modifications or build, it's better to post each seperately in Noobie Bronco Tech Questions. Flame free zone. This will get more attention and you can build up your post count to get into other sections such as Bronco and Ford Parts/Accessories (75 posts required to participate due to scammers who preyed on our members ).

Here is the 1993 Bronco Dealer Brochure in Google Drive @ 93Bronco.pdf

1993 Bronco Dealer Training Video via silver70 @

1993 Bronco, Venezuela Commercial @

Our Forum FAQs includes for example, How To Upload Images To Posts & How to Use Search. See more tips!

See Baba Looey's Favorite FSB Links (lots and lots of tech links)

Try to find time to participate in our current Full-Size of the Quarter Contest & later, Full-Size of the Year Contest @ Voting
See pictures & build info of each Bronco nominated.
You will get ideas by those competing. Also see the prizes! They are awesome as compared to other sites' "contests"!
Al
 

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Ive got a 94 motor + electrical in mine, and went though a similar issue...
You definitely need to check codes. Replacing a damaged coolant temp sensor made things better for me for a while, then it started getting bad again. I tested every other sensor and system I could... vacuum was great, air injection reactor working properly, all sensors within spec. Then I found my EVR solenoid which actuates the EGR valve was leaking faster than it should. Replaced this and things have been good since.
 
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