Greetings,

Just looking for ideas. 1996 F-150 4.9L A/T 2WD, cranks but wont start and the fuel gage is pinned over the full mark. All fuses are good and the tank has at least 5 gals. of gas in it. I'm sure this is not the first time this has come up. Any suggestions?

Thanks

 

Hard to tell without more info. Suggest to verify the basics - fuel, spark, timing.

My fuel gage has been goofy for quite a while, just make sure you're getting adequate fuel supply to the engine.

 

Yep, spark, fuel, compression. I was looking for magic! I just bought a Ford ETM off of eBay. It will help but I for sure will need to get my rig running before it arrives.

Thanks

 

Then check compression. IF you have spark and fuel the next thing is compression.

 

It appears I have no spark.

 

Ahhh now we are getting somewhere. Cheap part to throw at it and most common is the crankshaft position sensor.
Try changing that.

 

CKP, OK. I am going to assume it's screwed into the side of the block somewhere. I don't have an ETM so I'm in the dark. Do you think it would be possible to check the ACV at cranking speed off the sensor just as a possible way to confirm it's dead?

 

I found the CKP. It has a 2P connector with a green and a black wire in it. The harness runs around the front of the engine and past the distributor but since I don't see the wires at the distributor I will assume they go straight to the ECM. A scan tool would make life a little easier or I could take a shot at a CKP for $62.00 (That's what the dealer wants anyway).

 

I was just thinking, shouldn't the MIL come on and stay on if the CKP has failed? I believe it should even on an OBD I vehicle and this is OBD II. I might need to find a generic scan tool.

 

Autozone and AdvanceAutoParts will scan your truck for free and give you a print out of the codes.