Won't Accelerate! - Page 2 - JeepForum.com

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post #16 of 35 Old 07-18-2013, 11:38 AM
dellis
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Quote:
Originally Posted by sebian View Post
IIRC your OHM meter should be set to 20k ohm if available. And during the check, it should read "0" ohms, indicating that there is no resistance in the circuit. Double check your multimeter specs to make sure it will read open resistance like that.
We must be careful with understanding test procedures. I know that the terms "open resistance" or "no resistance on the meter" confuses a lot of people when they encounter it in making resistance measurements, but the interpretation above is not correct.

A good sensor will have open resistance, and not zero resistance. That is, the meter will show "no resistance" and should read "1.", flash digits, or show "OL" .... the OL stands for "Open Loop". If it reads O (zero) or some low resistance value, then the sensor has a short and should be replaced.

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post #17 of 35 Old 07-18-2013, 01:54 PM Thread Starter
trev52890
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Rechecked cKs results are perfect. Could it be a bad torque converter or stator?

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post #18 of 35 Old 07-18-2013, 01:56 PM Thread Starter
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post #19 of 35 Old 07-18-2013, 05:38 PM
ZeeJay1997
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post #20 of 35 Old 07-21-2013, 07:56 PM Thread Starter
trev52890
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fuel pressure is good

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post #21 of 35 Old 07-22-2013, 01:27 PM Thread Starter
trev52890
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bump

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post #22 of 35 Old 07-22-2013, 01:41 PM
Oldfrog
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If you want to check the Crank sensor...here is the correct procedure:
But if it isnt a genuine Mopar sensor, you're pizzing in the wind, cuz Jeeps hate aftermarket sensors.
https://www.youtube.com/watch?v=yp_kK6U8a64

I'm not sure that's the problem though. Have you pulled the codes ?...wait...nevermind, I re-read your post. No codes.

Open the distributor cap and check everything out, visually.

2007 5.7 Hemi, Ltd. QD II -
1997 ZJ, 4,0 select trac, Up country, track lok.
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post #23 of 35 Old 07-22-2013, 02:02 PM Thread Starter
trev52890
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crank sensor is checked/good distributor has new cap and rotor and is visually good

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post #24 of 35 Old 07-22-2013, 02:38 PM
Oldfrog
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Is it a Mopar crank sensor?

2007 5.7 Hemi, Ltd. QD II -
1997 ZJ, 4,0 select trac, Up country, track lok.
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post #25 of 35 Old 07-22-2013, 02:40 PM
Oldfrog
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Quote:
Originally Posted by trev52890 View Post
Cant be a bad tps because i can rev it in park to any rpm without it bogging. and throttle cable is fine.
FYI, mine did the same thing. Not saying for sure the TPS is your issue, just sharing what mine did.

2007 5.7 Hemi, Ltd. QD II -
1997 ZJ, 4,0 select trac, Up country, track lok.
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post #26 of 35 Old 07-22-2013, 02:59 PM Thread Starter
trev52890
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crank sensor is mopar tests fine. The tps is not the issue i have tested it 3 times, bought a new one, tested again, and drove with it unplugged and nothing changed

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post #27 of 35 Old 07-22-2013, 05:23 PM Thread Starter
trev52890
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Looks like it was the map sensor. the first few times i checked it it was out of range but only about a couple tenths of a volt, so i just wrote it off thinking it was fine. but it wasn't problem solved thanks for all your help guys

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post #28 of 35 Old 07-22-2013, 06:15 PM
Oldfrog
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Good deal ! Hope that's it.

2007 5.7 Hemi, Ltd. QD II -
1997 ZJ, 4,0 select trac, Up country, track lok.
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post #29 of 35 Old 07-23-2013, 12:21 PM Thread Starter
trev52890
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Wasn't it, i lied. replaced it with a new map sensor and still the same thing. but yesterday when i unplugged the sensor completely it would run crappy but better and i could accelerate. could this mean pcm?

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post #30 of 35 Old 07-24-2013, 10:53 AM Thread Starter
trev52890
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Here is an update. Problem still persists. Dies and hesitates randomly but only while it is in drive. shifts fine. Sometimes it dies from putting it into drive and sometimes is dies when accelerating. It is always hesitating and won't accelerate past 30mph or so. New cks, map, tps, iac, and not duracrap. all electronics test fine and i have tested them 3+ times each. grounds are good. fuel pressure is good. vacuum lines are good. TB clean. I really need help on this one guys im stuck. I rebuilt the engine a couple weeks ago but thats not the problem because it was doing this before the rebuild. Please help me out.

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accelerating , limp mode , transmission

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