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Discussion Starter · #1 ·
History: My truck wouldn't start up after I just shut it off. I thought it was heat soak, came back later and it still wouldn't start. I put the screwdriver over the starter relay and it make the turning over sound. My buddy thought was a dead battery, sure enough it started right up after being jumped. He put the voltometer on it and said it was in the proper range. Problem solved right? It was a 6 year old battery fyi.

A week later, I went to start it up and it's dead again. I'd been driving it every other day for longer drives (thanks cheap gas).

Yesterday: I put in a new battery and it fired right up. Made sure all the connections were really snug, they don't wiggle at all. My gas gauge seems like it was more accurate and the needle for my battery was 3/4 full. Drove for 15 minutes, as I am about to pull into the driveway, check engine light came on. My temp gauges were all fine. No smoke, drove great. I haven't checked it today. Any thoughts?
 

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Yo kammots,
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.

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.
□•□
 
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Discussion Starter · #3 ·
Thank you sir. Of course today, it fired right up with no check engine light. I knew if I didn't post, the light would still be on. But, I'll still get a reader for future diagnostics. Man, I love driving with the top off. Just need to give it a wash.
 
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