Checking Codes on a 91 4runner?
11-29-2006, 07:58 PM
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Checking Codes on a 91 4runner?
Hey guys, I got a check engine light on my 91 4runner and to my dismay autozone can't check it because its not OBDII. I'm sure I'd have to pay the dealer an arm and a leg just for them to take 30 seconds to check the code. Is there a way I can check it myself? I'm assuming my truck is OBDI, do I have to just go out and buy the scanner thing? Let me know how you guys check your codes, because check engine lights drive me nuts.
11-29-2006, 08:03 PM
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Hey guys, I got a check engine light on my 91 4runner and to my dismay autozone can't check it because its not OBDII. I'm sure I'd have to pay the dealer an arm and a leg just for them to take 30 seconds to check the code. Is there a way I can check it myself? I'm assuming my truck is OBDI, do I have to just go out and buy the scanner thing? Let me know how you guys check your codes, because check engine lights drive me nuts.
11-29-2006, 08:03 PM
#3
Yes, but I dont want you to lose an arm or a leg. Have you tried Pep Boys? I know it will take over 30 seconds to go into Autozone and listen to the guy tell you he cant do it.
11-29-2006, 10:08 PM
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if you know just say so. when you do like above more than the person who originally posted that got your ire up suffers from your post.
If you don't care for the negative dealer comments PM them and change their mind.
I have read almost every post you have done in the last few weeks and have learned quite a bit, and will hopefully continue to glean some info from your experiences. You have posted some very useful info. Don't muddy the waters by trying to but heads with the haters.
sorry for the rant , back to the regularly scheduled program.
11-30-2006, 03:50 AM
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You have to admit that most dealerships are the most expensive places you can go to have service done on your truck. I do all the work on my truck myself but occasionally go to the dealership to order parts. I'm confused by what your post meant, but when I go to the dealer they are usually less than helpfull if I have questions. I see that you work for a dealer but don't be offended by my post and take it personal as I was not talking about you or the dealership you work for.
11-30-2006, 03:55 AM
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Theres a diagnostic box on the passenger side fender under the hood...its labeled on top of the box. Take a paper clip and make it into a U shape and put it into the TE1 and E1 holes...these slots are labeled under the cap in a diagram. Then get in and turn the ignition switch past ACC to on and watch the check engine light blink. If there is a short pause between blinks then its a 2 number code. The codes will cycle through and start all over so have a pen and paper handy.
11-30-2006, 06:59 AM
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I think he means it will be a two digit code Like 10 or 25. the first set of blinks will be the first digit 1 the pause then the next set will be second digit 7.
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11-30-2006, 07:02 AM
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Yes...it will blink twice...then short pause...then maybe blink 5 times...that is read as code 25. Now...keep watching it because the codes repeat themselves and be sure you are reading the code correctly. There will be a longer pause in between blinks when the code is finished. Like this...
Blink blink...blink blink blink....................blink blink blink
That would be a code 25 and 3 just for an example. Best way I can explain it..
Blink blink...blink blink blink....................blink blink blink
That would be a code 25 and 3 just for an example. Best way I can explain it..
11-30-2006, 08:09 AM
#10
Yes...it will blink twice...then short pause...then maybe blink 5 times...that is read as code 25. Now...keep watching it because the codes repeat themselves and be sure you are reading the code correctly. There will be a longer pause in between blinks when the code is finished. Like this...
Blink blink...blink blink blink....................blink blink blink
That would be a code 25 and 3 just for an example. Best way I can explain it..
Blink blink...blink blink blink....................blink blink blink
That would be a code 25 and 3 just for an example. Best way I can explain it..
11-30-2006, 04:25 PM
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So I checked the code today with the paper clip, That was awesome! I couldn't believe something so simple worked. I came up with a code 71 witch is the egr system. A dealership had told me before that it was either the egr modulator or the egr vacuum switching valve (VSV) I have already replaced the modulator and the light is still on, but before I just start buying more parts I was wondering if anyone else here has had any expierience with this code and what it was. I looked in my manual to find my VSV a month or so ago and couldnt find it. Thanks for the help so far guys.
11-30-2006, 05:02 PM
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So I checked the code today with the paper clip, That was awesome! I couldn't believe something so simple worked. I came up with a code 71 witch is the egr system. A dealership had told me before that it was either the egr modulator or the egr vacuum switching valve (VSV) I have already replaced the modulator and the light is still on, but before I just start buying more parts I was wondering if anyone else here has had any expierience with this code and what it was. I looked in my manual to find my VSV a month or so ago and couldnt find it. Thanks for the help so far guys.
11-30-2006, 05:14 PM
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How much suction does it usually take to make the motor die? I sucked as hard as I could (hahaha I can't help but laugh) but at the most the engine just seemed to slow down a bit, but not die.
11-30-2006, 05:17 PM
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Forgive me if I'm being Captain Obvious, but you did clear the code right? (By pulling the neg battery cable or pulling the ECU fuse) It just concerns me when you say "still on" as the code won't go off till you clear it. When the code comes back on that you know you have not fixed the problem.
Good luck-
-Scubaduck
Good luck-
-Scubaduck
11-30-2006, 05:17 PM
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Mine slowed the motor way down and died...might have a leaky EGR valve.
11-30-2006, 05:19 PM
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Forgive me if I'm being Captain Obvious, but you did clear the code right? (By pulling the neg battery cable or pulling the ECU fuse) It just concerns me when you say "still on" as the code won't go off till you clear it. When the code comes back on that you know you have not fixed the problem.
Good luck-
-Scubaduck
Good luck-
-Scubaduck
11-30-2006, 05:52 PM
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I would think now...it will still throw a code if removed. Go to a junkyard and buy one. They are over $100 new, but you could maybe get lucky with one at a junkyard.
