Question about Chevrolet Monte Carlo

1 Answer

Runs ok except at 4000 rpm or above..... it throttles down and right back up to 4000 rpm..... it does this every two seconds and as long as I hold the throttle open to 4000 rpm on the tack,it will only stop doing this when I go to 3900 rpm........ it runs as smooth as silk.......... feels like the fuel is disrupted at 4000 rpm........ just bought the car, so I don't know when the fuel filter was changed...... we changed the air cleaner..... it was so dirty, the car ran noticeably better after the change, and this problem arose soon after the filter change........ below 4000 rpm, the car runs like a top....... any suggestions would be helpful......... thanks for taking the time to look at this.... the engine is a 3.4 ltr. 207 cu in V-6 in a LS 2005 monte carlo

Posted by on

  • Lou Ruggiero
    Lou Ruggiero Mar 24, 2011

    thanks for the heads-up on the carlo....... I had set up an appointment for the 29th of March at a chevy dealer to put the car on a diagnostic machine...... they get a hundred dollars just to hook it up to get an answer...... I'll try the fuel suggestions first........... maybe I won't need to hook up the car on the machine........ thanks..........

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 1,874 Answers

1. Replace the fuel filter.
2. If the problem still occurs check the fuel pressure. Replace the fuel pump if necessary. Then test the car again.
3. The best idea is to access the Engine Control Module (ECM) using suitable diagnostic equipment connected to the data link connector of the car, in order to pull out all DTC (Diagnostic Trouble Codes) memored. Then you will be full informed about bad components, and you will be able to repair & replace bad pieces and reset the ECM.

Posted on Mar 24, 2011

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
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.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Major vacuum leak


A vacuum leak is unlikely to hold RPM that high. 1st inspect throttle plate not closed all the way, possibly hung up, or cable pulled too tight holding throttle open or accelerator pedal not releasing completely. If ok, next would be a computer controlled issue , Possibly idle speed control motor or throttle body assembly if not cable operated .

Dec 31, 2013 | 2001 Dodge Intrepid

1 Answer

I got a 2002 Taurus n it runs fine upon hard acceleration until 3000 rpm to 4000 above that it's fine again, in between 3 n 4000 it spits n sputters like a misfire! No check engine light comes on.


That sounds like the camshaft synconizer..They dont oil good and they can squeak like a belt,,usually after a few mins of running..When your at wide open throttle the computer ignores the cam sensor so if it gets a bad signal,,it doesnt see it,,and you get no light...Look at the back of the engines intake..where the wires cross over to the firewall side..Under the throttle body..Listen carefully and see if you can hear it squeaking..Sometimes you have to use a hose to listen

May 06, 2012 | 2002 Ford Taurus

2 Answers

2000 pontiac grand am 3.4 motor auto trans 4 door.Car starts and drives okay motor seems to stumble slightly between 3000-4000 rpms. with car stopped in park try to rev motor will only go between 3200-4000...


Hi Tom your vehicle is equipped with a Rev limiter it will not allow you to rev the engine above 4000 with the trans in park; as for the first problem you may have one of two things, one of the spark plugs or spark plug wires is bad or you have a flat spot on the throttle positioning sensor in which case have be replaced. Good luck?

Mar 10, 2011 | 2001 Pontiac Grand Am SE

2 Answers

I have code p1259


code 1259 is the actual v-tech code and oil pressure codes go from po520-po523. Many people do not have any idea what v-tech actually means. It's an actual oil solenoid valve that opens up above 4000 rpms and adds extra oiling to the cylinder head. To set this code po1259 you would have had your car above 4000 rpms for more than 3 seconds i believe and have this valve not work. Chances are that the valve it's self in the head is bad and setting this code. I have had it happen on a few other Honda's

Feb 20, 2010 | 1998 Honda Accord

1 Answer

Saab 9-5 need to give alittle throttle for cold engine start


the idle air control valve may be bad or just needs cleaned out. idle air control valve acts the same as a choke. if it is messing up it will cause engine not to run right.

Jan 27, 2010 | 2008 Saab 9-5

1 Answer

My 2000 Ford Taurus at about 4000 rpm does not go further with rpm even when accelerator is press more. It gives off a pulsating choking sound at above mentioned rpm. At below 4000 rpm the engine runs...


To do this in park or neutral is normal. To do it while driving is not.
There are so many things that could cause this but if you have no check engine light and it runs normally up until then I would suspect you have an exhaust restriction. This can be checked fairly easy on this vehicle, it has a DPFE sensor that mounts near the top back side of the motor.It will either be black or silver,will have a 3 wire connector to it and 2 hoses going down the back of the motor to the exhaust. You can disconnect one of these hoses and install a vacuum/pressure guage and measure exhaust back pressure. It should be 1 psi or less at idle and when you go to wide open throttle should not exceed 3 to 4 psi. If it does something in exhaust,most likely one of the catalytic convertors is stopped up.

Feb 19, 2009 | 2000 Ford Taurus

1 Answer

Mini one auto 2002 revs won't go above 4000 rpm


Hi    try this  switch on ignition without starting depress gas pedal fully and hold down for a second or    two then start the car and lift up your foot slowly when it fires. sometimes this will reset ECU    let me know if this works

Oct 20, 2008 | 2006 BMW Mini

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

Related Topics:

77 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

75807 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22133 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8172 Answers

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

Answer questions

Manuals & User Guides

Loading...