Question about 1984 Pontiac Grand Prix

1 Answer

I just completed assembly of the motor in my car and started it for the first time in 8 months. After starting the engine, it idles very high continuously. Someone told me it couold be a vacuum leak, but, I am doubtful. What do you think could be causing this?

Posted by on

  • McCoy Larry Nov 26, 2008

    idles 1500-2000 rpm have relpaced tp sensor and idle air controller no difference


1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

How old is the carb? Could be the choke is stuck on, try pulling the choke leaver on the side of the carb, if that dosnt work there is usally a screw on the throttle side that can be adjusted

Posted on Jan 01, 2009

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:

1 Answer

How to recycle cmputer after reseting CEL

1.let car sit overnight. 2. Start engine, put A/C on high, let it idle for 20-25 minutes, 2, then drive car uninterrupted for 60mph for 10 minutes, 3. slow down to 25 mph for 4 minutes, come to a complete stop with foot on brake let it idle for 2 minutes, 4. drive again at 30 mph for 8 minutes, come to a complete stop let it idle with foot on brake for 3 minutes. 4. Drive at 40 mph (turn off overdrive) for 6 minutes. 5. Drive at 20mph for 3 minutes at a time, each time coming to a complete stop with foot on brake for 2 minutes. Do this 4 times. Let the car cool overnight and repeat entire process. Then check status of systems with a code scanner.

Apr 15, 2014 | Toyota Camry Cars & Trucks

1 Answer

Intermitente starting problems & transmission seemed to go out the other day while driving it

sounds more like an engine issue off the top of my head. The transmission runs off the vacuum from the engine. If the engine timing chain is stretched it will run then not run, have problems idling and shifting and won't charge the battery properly. anyone who has done one before could probably tell you just by the sound of the engine running.

Feb 26, 2014 | 1998 GMC Jimmy

1 Answer

96 jeep grand cherokee limited 5.2 V-8 seems high idle," like a plane ready for take off".

Not me! But I digress. It seems that the cold start heater is stuck or broken...check it out.

Jan 13, 2013 | 1996 Jeep Grand Cherokee

1 Answer

How do i set my distributor advance for 2.5liter, 1987 acura? I can't seem to find a good balance, i get either no low end power or no high end power

15 degrees BTDC according to

  1. Start engine and allow it to warm up until the cooling fan comes on.
  2. Connect a timing light to engine; while engine idles, point light toward pointer on timing belt cover.
  3. Inspect ignition timing at idle. Timing should be 15plus or minus2 degrees BTDC, using the RED timing mark, at 680plus or minus50 rpm in N .
    1. If timing adjustment is necessary, complete following:
    1. Remove control box upper cover and ignition timing adjuster from control box.
    2. Drill 2 rivets off with a 1 / 8 in. drill bit, then separate stay cover from adjuster.

  • Oct 29, 2010 | 1987 Acura Legend

    1 Answer

    1992 ford f150 xlt- when first started idle jumps from very low to very high repeatedly until warm. then idle is high

    try un-plugging the IAC motor,then start it,if it idles low and stays there then replace the IAC motor----if no change then you may have a knock in the engine and the knock sensor is telling the computer to change the timing to compensate for spark knock due to low grade fuel,so it advances the timing back and forth due to too high of rpm then too low and the computer doesnt know how to smoothen it out that fast,but eventually does.The check engine light would usually come on in this case

    Jan 23, 2010 | Ford F-150 Cars & Trucks

    1 Answer

    Long Crank Time When Hot

    Timing belt/chain may have been put it slightly off time, when motor rebuild

    Jan 13, 2010 | 1993 Dodge Spirit

    2 Answers

    Haw i can fix my fans? they not starting...

    It's probably the sensor. Read your manual to find it. If not it's probably the motors which can be replaced much cheaper than the assembly, however you can sometimes get a complete used assembly off Ebay for cheap.

    Jun 20, 2009 | Mitsubishi Eclipse Spyder Cars & Trucks

    1 Answer

    89 gmc can't start when hot

    Check your engine codes for anything , you can get free info on the web or get a repair manual. it can be one or more problems until you narrow it down.

    Apr 26, 2009 | 1989 GMC C1500

    1 Answer

    High Idle from start

    Maybe the automatic choke needs a good cleaning and has gummed up over time and is possibly causing the choke to stick until the engine warms and loosens the part to function properly.

    Apr 18, 2009 | 1994 Toyota Pickup

    1 Answer

    Why my motor ildles high

    throtle posistion sinsor

    Feb 12, 2009 | 1999 Chrysler 300M

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

    Related Topics:

    96 people viewed this question

    Ask a Question

    Usually answered in minutes!

    Top Pontiac Experts


    Level 3 Expert

    64034 Answers

    Colin Stickland
    Colin Stickland

    Level 3 Expert

    21990 Answers

    Jeff Turcotte
    Jeff Turcotte

    Level 3 Expert

    6812 Answers

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

    Answer questions

    Manuals & User Guides