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Old 08-17-2010, 09:59 AM
BadBob BadBob is offline
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Default 1991 Ranger Hesitating and Stuttering

It's hesitating and stuttering in a sort of random pattern. It can be rogh getting up any sort of hill. Yesterday I had to stop on a hill and didn't think I was going to get it to move.

I took it to the local AutoZone to get a code dump and they would not do it. "It's to old we only do this for ODB2." This is the same place that told me you don't need a code reader we can do that for you. So the first time I ask ....

After a lot of goggling and reading (lots of it here) I figured out how to dump the codes and found a list. Got the codes out in spite of some incorrect instructions. I used the jumper/blinking light method.

18 Ignition Diagnostic Monitor (IDM) failure
28 loss of primary tach right side
33 throttle position sensor noisy/harsh online
88 electro drive circuit fan circuit failure

After some study I think 18 and 33 are my main issues so I'm planning to replace these.

Any thoughts on the others.
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1991 2.3L

Last edited by BadBob; 08-17-2010 at 10:48 AM.
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  #2  
Old 08-17-2010, 06:46 PM
BadBob BadBob is offline
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Default Re: 1991 Ranger Hesitating and Stuttering

I changed the ignition module. It runs smooth as ever now but...

After running for a few minutes the check engine light comes on and shortly there after the engine stops and will not start again until the ignition is turned off for a few seconds. After it restarts the cycle repeats. I haven't put a stop watch on it but I am pretty sure it goes through the cycle faster when it's idling. It's to late tonight to do any thing else.
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Old 08-18-2010, 01:39 AM
BadBob BadBob is offline
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Default Re: 1991 Ranger Hesitating and Stuttering

Do I have a serious problem here or just something no one has any answers for?
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