[AT] OT Ford

[Thomas O. Mehrkam]

Actually if it is a 1991 ford all you really need is a jumper wire and
a service manual. You just short two wires together and the engine light 
will flast out the codes.

You can buy a $35 tool which comes with an instruction book that tells
how to use it and what the codes mean.

The ford has severial computer diagnostics that test most of the engine 
and tell you if it is working correcty. There is the key on engine off 
test that is very helpful and then there is the key on engine running 
test. It will flag EGR valve problems and transmission problems. It 
enable me to repair the transmission twice. Still running at 200,000 miles.

It is not food at catching ignition problems though.

You might take an ohm meter and test the throttle position senser.
That will make the engine crap out at certain speeds. AutoZone might 
test that for you also.

Or Autozone if you do not want to get the tool.

charlie hill wrote:
> Go to an Autozone store and they will scan it for free.  
> 
> Charlie
> ----- Original Message ----- 
> From: <pga2 at hot1.net>
> To: <at at lists.antique-tractor.com>
> Sent: Wednesday, March 24, 2004 8:23 AM
> Subject: Re: [AT] OT Ford
> 
> 
> 
>>I would do that, but I don't have a code reader and I'll be damned
>>if I'll pay the dealer's price to do that! I gave up and took it to
>>the dealer the last time it was doing this and it cost me $300 to get
>>it back. It WAS fixed, but that's just too much money now with my
>>current situation.
>>
>>Phil
>>
>>
>>>Dump the codes from the computer. That may give you a clue.
>>>
>>>I always check for the obvoius mechanical problems and then go
>>>straight to the computer. Many times it will give you a clue.
>>>
>>>Phil Auten wrote:
>>>
>>>>Jerry,
>>>>I have a similar problem with my '91. It's fuel injected and
>>>>computerized. It will run rough, with an intermittent
>>>>miss while running down the road at pretty much any speed under 65
>>>>mph,  but only while "cruising", that is
>>>>not accelerating or decelerating. A little more throttle and it
>>>>smooths  out. Same thing for a little less throttle.
>>>>I suspect a vacuum leak somewhere, I just haven't found it yet.
>>>>
>>>>Phil
>>
>>
>>
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