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Old 04-18-2013, 07:19 PM   #1
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93 hard start

Hello everybody. I went out to start my jeep today and it took awhile to start and i noticed the check engine light was on. So i pulled the codes and every time i go to read them its seems to change so i took a video and was wondering if anybody could help me figure them out. And figure out what is causing the hard start.

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Old 04-18-2013, 09:12 PM   #2
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The codes that i got from watching your video are: 12,33,24,21,15,55

12- system check. You will get this one everytime.
33- AC clutch. You will get this one everytime as well, unless you have AC.
24- TPS sensor. Part of your problem with the hard start. Throttle Position Sensor
21- O2 sensor. Another part of your problem.
15- Distance sensor. Thats the sensor for the speedo, Not sure why you are getting that code, I get it on mine cause i have a cable speedo, but yours should be electronic since its a 93.
55- Equals end of test.

So, replace the TPS and the O2 sensors, and your hard start problems should go away.

Atleast thats what my troubleshooting manual says that is what your OBDI is trying to tell you.

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Old 04-19-2013, 07:33 PM   #3
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Thanks for the help. I figured out that the hard start was due to a bad distributor and rotor. replaced those and it starts perfect. but know it is hesitant while driving, could that be due to a bad tps sensor.
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Old 04-20-2013, 12:31 AM   #4
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Could be both, TPS and O2.
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Old 04-23-2013, 07:56 PM   #5
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got a new tps and put that on and it is still hesitating while driving. anybody got any opinions on what could cause the problem.
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Old 04-30-2013, 07:33 PM   #6
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Okay so im still having the problem. i have changed the tps, iac, and distributor. and it still seems to hesitate while driving. it seems to happen often when the jeep is still cold. what else could cause this? oh and im putting in a new fuel filter tomorrow i will let you know how that goes.

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