QUESTION.....trouble code included

[Shane91Explorer]

My sister has a 98 V8 "X" with 49,000 miles on it. It has a bad timing problem. I had it hooked up to a computer, and it came up with P0300 as a trouble code. It also said "multiple cylinder misfire detected" (DUH!). Has anyone had this problem before, and how was it corrected? I am thinking it may be the crankshaft position sensor.

ALSO......being only 3 years old, and only 49,000 miles, should this be covered under Ford's EMISSIONS warranty? I know they have to guarnatee it to pass emissions for a length of time, which I believe is 5 years (may be 7 now). Please, any information and any links of places/websites I can check codes, or warranty info would be VERY HELPFUL!

Thanks a bunch guys, you ROCK!!!!

 

[TPLYNCH]

Read this thread from Under the Hood - Dead Link Removed

 

[Shane91Explorer]

This is misfiring at all times (warm or cold). Especially under light acceleration. It backfires from what sounds like the passenger side of the motor. Under more thought, I am wondering if the coil pack is messed up. I am going to take it to the dealer today and try to get them to AT LEAST give me a free diagnosis. She'd only had it for a month. WISH ME LUCK! Also......if you still have any comments, PLEASE leave them! Anything can help!!!!!

 

[Shane91Explorer]

Went to dealer----OBD-II SUCKS!

I just got back from the dealer. They said they would fix it! I'll be sure to post the problem when I get it back. It sounds like a common code (P0300).

Speaking of that, I was told this new OBD-II system is supposed to be more accurate than the old EEC-IV set-up. If this code (P0300) is turning up bad IAC solenoids, bad O2 sensors, bad crankshaft position sensors, etc (in other words - guess work!). It seems to me the exact opposite is true. I've never had a problem with the coding of the EEC-IV. The only time I had any guess work was when it told me the thermactor solenoid was not operating......there's two of them on my Mustang, so I had to simply get a voltmeter and test which one was bad. Not that anyone cares. If you read this far, thanks! LOL.

Shane

The EPA needs to disappear for a while so things can get perfected....or something. LOL

 

[Shane91Explorer]

FIXED!

I am totally amazed at the lameness of the problem. It wound up being plug wires. Of all the stupid things! Maybe the OBD-II is smarter than I thought!

thanks,

Shane

 

[rpryor]

p0300

hey Shane obdII only as good as the tech much easier to work with for the most part

 

[Robert]

Regarding the emissions warranty, your best source regarding it is in your warranty information booklet. The only two things that have a longer warranty than the standard 3yr/36K warranty are the PCM and the Catalytic converter on my '97. They are covered for 8yr/80K. I thought that my '86 Ranger had more items covered for longer than 3yr/36K than my '97 Explorer has. Vehicles for sale in California get longer emissions coverage than the rest of the US.