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When I accelerate has no power moves slightly then turns off

Tiny
ALEXSANDOVAL91
  • MEMBER
  • 2005 JEEP GRAND CHEROKEE
  • 67,000 MILES
When I turn on my truck put into gear and accelerate it feels like it has no power it does move but feels like im pulling 1000 lbs then wen I stop at the red light it shuts off. Once I turn it back on it rides like a dream.
Tuesday, October 25th, 2011 AT 12:04 AM

13 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do you have a check engine light?

Have the exhaust system checked for restriction-also have the EGR, MAP and TPS checked to include a fuel pressure
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Wednesday, October 26th, 2011 AT 1:16 AM
Tiny
ALEXSANDOVAL91
  • MEMBER
  • 9 POSTS
Their is no check engine light on the truck. I figuered the map egr sensor will make it turn on the only light that comes on is the low oil light which I check the oil and its full so I figuered thats just the switch but what is the tps u mentioned? And will that make the check engine light come on?
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Wednesday, October 26th, 2011 AT 3:17 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
A fault with any sensors on the engine management system would trigger the Check Engine Light (CEL) or Malfunction Indicator Lamp (MIL).

Ensure that the MIL comes on when ignition switch is turned on and goes off after a few swcobnds when engine is started.

If MIL does not come on when ignition switch is turned on, you have a fault with it and need to find out why it is not showing.
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-1
Sunday, October 30th, 2011 AT 6:52 AM
Tiny
ALEXSANDOVAL91
  • MEMBER
  • 9 POSTS
When I turn on my jeep the check engine does turn on and a few seconds later it turns off I still have connected the obd2 scanner and no codes have appeared. I try it everytime my truck turns off and no codes thats why I dont think its a sensor because once it sends the code the computer it will stay on until you erase it.
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Monday, October 31st, 2011 AT 3:33 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
For such conditions, it is not going to be easy to diagnose.

If the engine stalls when you cometo a stop, that could be due to excessively low idling speed and that could be due to a dirty throttle body and/or IAC. Have tham cleaned and retest.

Have you checked the spark plugs and ignition coils?
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Monday, October 31st, 2011 AT 3:45 PM
Tiny
ALEXSANDOVAL91
  • MEMBER
  • 9 POSTS
Yes I just replaced the spark plugs and cleaned out the throttle body completely. The truck doesnt turn off every day its completely ramdom usually wen I turn it on and just put it in gearand drive then itll shut off at the first stop sign or when I bring down the rpms down under 2000rpms. Now that its cold I have to let it warm up a few min so I havent had the issue recently.
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Monday, October 31st, 2011 AT 4:48 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Which engine do you have?
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Monday, October 31st, 2011 AT 6:34 PM
Tiny
ALEXSANDOVAL91
  • MEMBER
  • 9 POSTS
4.7 v8
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Monday, October 31st, 2011 AT 6:38 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Seems to be a problem with the cold start and idle control.

Did you clean the IAC?
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Tuesday, November 1st, 2011 AT 3:33 PM
Tiny
ALEXSANDOVAL91
  • MEMBER
  • 9 POSTS
Hes I had the mechanic clean out the whole throttle body and he also did the idle air control he reviewed all connections and cleaned it out
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Tuesday, November 1st, 2011 AT 3:41 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
I can't think of anything else that can cause the problem.
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Tuesday, November 1st, 2011 AT 4:44 PM
Tiny
TONIAT27
  • MEMBER
  • 2 POSTS
I had a problem like this with my 2007 grand Cherokee 3.7 I was stranded at a rest stop for 2 days in NE. Tried everything and had it towed to a garage all to find out that there was a sensor inside the transmission that was bad and he took the negative post off the battery for a few minutes reset the codes and drove it. I drove it back from NE to NY without a problem and was still driving it until I loaned it to my brother and he blew the motor now I'm trying to find out how much it would cost to get a new motor and how much to put it in I love my jeep
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Thursday, October 12th, 2017 AT 9:19 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
Yep jeeps are great cars. I would try to get a factory rebuilt unit they cost a more but are well worth it. Parts and labor should cost between $3500 and $4500

Please let us know what happens.

Cheers, Ken
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Friday, October 13th, 2017 AT 12:04 PM

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