check engine light
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Freshman User
Joined: Jan 2004
Posts: 41
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From: Southeastern Ma
check engine light
1997 f-250 hd 351cu
my check engine light comes on after 10 minutes of highway speed and only when outside temp is less then 40 degrees f.
i checked all vacuum lines andhave no leaks, but the one thing i found that i thought was odd was the egr inlet tube was cold. shuold it be hot to the touch?
my check engine light comes on after 10 minutes of highway speed and only when outside temp is less then 40 degrees f.
i checked all vacuum lines andhave no leaks, but the one thing i found that i thought was odd was the egr inlet tube was cold. shuold it be hot to the touch?
Posting Guru
Joined: Sep 2002
Posts: 2,420
Likes: 3
From: Langhorne, PA
Autozone may not tell you what you really need to know. Get a shop book and do it yourself. You are going to have to learn alot about that engine quickly. The codes won't always give away what the real failure is. Sometimes it takes a "human computer" to figure out what is wrong.
If any sensor is bad, it could be a dirty contact, a fault in the wiring, or a glitch in the engine processor. You need to understand the system because autozone employees probably don't, or are limited in the amount of time they will talk to you.
If any sensor is bad, it could be a dirty contact, a fault in the wiring, or a glitch in the engine processor. You need to understand the system because autozone employees probably don't, or are limited in the amount of time they will talk to you.
Senior User
Joined: Sep 2003
Posts: 362
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autozone dunno how to count the beeps i took mine there and he wrote bunch of codes down that didn't exist so i ended up getting a piece of wire and doin it myself and with the help of a few people on here i found the codes
Post Fiend
Joined: Oct 2003
Posts: 6,214
Likes: 13
From: New Jersey
It depends on the AutoZombie guy. Like with everything else, there are people who are really smart and helpful, and people who, well, are less smart and helpful. Just the way it is.
But using a paperclip and a 12V low-current light (or a 12V Radio Shack LED for $2) you can do it yourself.
Since all my vehicles are ford, I just gave in, spent the money, and bought a true scanner with an LCD display and didn't look back. While not difficult, I find counting light blinks a pain and its much easier to see "replace water temp sensor" on the display.
But using a paperclip and a 12V low-current light (or a 12V Radio Shack LED for $2) you can do it yourself.
Since all my vehicles are ford, I just gave in, spent the money, and bought a true scanner with an LCD display and didn't look back. While not difficult, I find counting light blinks a pain and its much easier to see "replace water temp sensor" on the display.
Lead Driver
Joined: Nov 2002
Posts: 9,557
Likes: 44
From: Concord, NC
Are '97 F250's OBD-II? I know the 150's are, but I am not sure about the 250's. If it is, a code reader or autozone will be the only ways to find out the codes. If not, the paperclip method will work fine.
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donbrown
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