Question about Jeep Grand Cherokee

1 Answer

I can hear a whistle\wind sound under hood while this is happeing.Rpm goes up but truck is slowly getting up to speed very slowly.

Posted by on

  • 1 more comment 
  • briansam Mar 14, 2011

    so it wouldnt be the map sensor this solution u gave mentions the ac system,my problem is the truck being sluggish

  • briansam Mar 14, 2011

    ok now u know this is a 97 grand cherokee 6cylinder 4wheel drive

  • briansam Mar 14, 2011

    so it wouldnt be the trans itself i had it rebuilt 7yr ago



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Jeep Master
  • 17,970 Answers

I suggest check this TSB in THIS LINK: Jeeps/misc/TSB/Caliber_1803107

2007 (MK49) Compass
2007 (MK74) Patriot
2007 (PM) Caliber

NOTE: This bulletin applies to models equipped with a 1.8L, 2.0L or 2.4L gasoline engine (Sales Code EBA, ECN or ED3) on PM/MK models built before April 21, 2007 (MDH 0421XX).

Some customers may experience the following:

  • Automatic CVT models - Perceived lack of performance under light to moderate acceleration from a stop.
  • All Models - Ticking Sound intermittently heard from the engine compartment.

Software changes have been made to improve the above bullet points. In addition, changes to maximum RPM in neutral have been made to assist A/C compressor function during cold ambient temperatures to prevent A/C compressor slugging.

Hope this helps.

Posted on Mar 14, 2011

  • ZJ Limited
    ZJ Limited Mar 14, 2011

    There are tests that can be done to determine if the injectors are bad. They involve some special fittings and a dealer scan tool to run tests and check injector return flow. I wouldn't jump to replacing the injectors or the high pressure pump blindly if the transfer pump has failed. Just because the transfer pump has failed does not mean the injectors are bad whatsoever. Inector solenoid windings can electrically short or go open, the injector nozzles can be dirty or worn, but the only way a failed transfer pump can hurt the injectors is if there was damage done to the high pressure pump from lack of fuel flow and metal made it's way into the injectors. That's not likely on a common rail system, because when flow decreases enough to become a problem it will set a fault code (P0148 - fuel delivery error - just as sample), and derate engine power to preserve the fuel system from damage.

    Keep us updated.

  • ZJ Limited
    ZJ Limited Mar 14, 2011

    Are ypou check Torque Converter, actuator or transs solenoids?



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

Why do i hear a whistling sound while driving sometimes?

I used to get this on my old car, check the rubber seals around the outside of the windows for small gaps. The air passing over the gap can be causing the noise.

Feb 12, 2015 | 2012 Hyundai Accent

1 Answer

I own a 2001 Mitsubishi Galant. At highway speeds I hear a loud winding noise coming from what sounds like the right front of the car. And also a whistling noise on deceleration.

sounds like you have an hole where air is blowing past. check for any missing screws or holes. if a mounting brace for any hoses or pipes that run under the vehicle have come loose they could whistle as well. if the noise during deceleration only happens when you brake then it's time for new brake pads.
hope this helps

Jan 21, 2015 | Mitsubishi Cars & Trucks

2 Answers

I have a 2003 ford expedition with the 5.4L that whistles at 30,60, and 70 mph when its cold out

Not sure the significance of the cold part. Typically when I hear a vehicle whistling, if it's under the hood, I always suspect a vacuum leak. A late model vehicle like that should throw a check engine light and some trouble codes if it were a vacuum leak.

Jan 04, 2015 | Cars & Trucks

1 Answer

Humming sound at around RPM level 2 car

this could be a bad wheel bearing.

May 21, 2013 | 2005 Audi A4

1 Answer

My engine is revving upon start of vehicle and the battery light goes on--- it will drive but it seems like the engine is idling too high

if your hearing a high pitched sound,it is probably your alternator working overtime to charge your battery,if it idles at a higher rpm,then someone tweeked ur idle speed,check under the hood,u can easily release using a wrench,

Jul 18, 2010 | 1992 Honda Civic

1 Answer

High pitch tone from my 2001 chevrolet S-10 pickup

You didnt indicate whether you ran the engine with the belt removed while replacing the alternator,if not do so and verify noise. Sounds like you may have a vacuum leak, best way to diagnose would be with a smoke machine if not available with the engine cold try spraying carb cleaner around the intake & any suspect vacuum hoses with engine idling look for a change in idle speed or elimination of noise. Hope this helps you out

Apr 10, 2009 | 2001 Chevrolet S-10

2 Answers


I had the same problem and it turned out to be a big vaccuum leak, Do you hear a whistle or similiar noise coming from under the hood anywhere? If so, check all of your hoses. Mine was behind the intake manifold..

Mar 23, 2009 | 2003 Mazda Mazda6

1 Answer

Whistling noise under the hood of my Honda civic.

Thhis noise could be a mutitude of issues. If you have some dash board spray, try spraying some on the top pully staying away from the fans and belts. Also position your face away from the expected spray. Water can be used but it not as affective. Then let me know what happened. Later DRRXR :)

Jan 05, 2009 | 2007 Audi A6 Avant Wagon

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

54 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts


Level 3 Expert

76164 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Kevin Daniels

Level 3 Expert

1455 Answers

Are you a Jeep Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides