Question about 1999 Pontiac Grand Prix

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Car starts hard chugs going down the road

Car wont start unless you hold the gas down about half throttle, then from 30 to 60 mph it chugs until you give it more gas or let off.

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  • Ryan Mills Dec 09, 2008

    miss

  • Ryan Mills Dec 09, 2008

    it misses

  • yadayada
    yadayada May 11, 2010

    There is no easy solution, have u had all the required services done? How may miles on it?

  • yadayada
    yadayada May 11, 2010

    does the engine miss or just act sluggish?

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  • 188 Answers

Sounds like timing and tuning. or the carb is sticking

Posted on Mar 26, 2009

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"I have a 1993 Grand Prix...It chugs when in park & u push on the gas.. Aso when going up a hill it starts to chug & drops down to like20 MPH..It wont go past 20 MPH until I get over the hill, then it...


Sounds like you are getting too miuch fuel and not enough air. Try replacing your spark plugs and wires, then cleaning your throttle body. Replace the air filter too if its been awhile. This will probably fix the problem.

Aug 16, 2014 | 1993 Pontiac Grand Prix

1 Answer

My 2002 hyundai accent 1.6 wont go above 25 miles an hour. idles high at 1500 - 2000 in park. drives normal until 25 and wont gaain speed til i drive another mile and half down road, then jumps tp 3200 rpm...


Possibly but to find the fault have the fault codes read . It may be the accelerator position sensor . Don't waste money until you have the codes to point you in the right direction

Mar 05, 2014 | Hyundai Cars & Trucks

1 Answer

Gas pedal sticking open while i'm driving down the road


Depending on the make model and year, it could be a binding throttle cable, or sludge on the throttle plate.

Feb 17, 2014 | Cars & Trucks

1 Answer

Hold gas pedal down start car


If this has a carburetor, look at the Power valve that is connected to the throttle lever. It is a small plate in front of the carb with a lever that moves with the throttle. There is a small rubber valve inside which allows gas to flow between chambers.

Another possibility is the fuel pump. After that, a bad Vacuum leak like from a ruptured EGR diaphragm can cause these problems.

Dec 23, 2013 | Ford Bronco Cars & Trucks

2 Answers

Chugging issue....


the fuel pump is going bad

Dec 01, 2012 | 2002 Ford Taurus

1 Answer

Why dosent my car advance when i step on the gas pedal


From what you say Daniel, your kickdown cable need's to be adjusted, here's how :

Down at the pressure lever on the front of the trans, loosen off the cable retaining nuts so there is a little slack in the cable.
then start taking the slack out of the cable a little bit at a time;
Rest a long screwdriver on the end of the pressure lever, holding the screwdriver with one hand start opening the throttle with your other hand.

Just at the point the idle RPM barely rises, the pressure lever should just barely move.

Driving test; Going along a level road at 25 mph light throttle, floor the gas pedal.
The trans should downshift to first gear.

repeat the same drive at 28 mph, floor the gas pedal, the trans only downshifts to second gear.

Sep 10, 2012 | 1990 Honda Accord

1 Answer

Car wont stay running unless you hold the gas peddle down half way


Does it run smoothly? If so you probably have a dirty throttle plate and IAC motor. Give me more details about what half way means, RPMs, and how well the vehicle runs otherwise.

Sep 01, 2011 | Plymouth Neon Cars & Trucks

1 Answer

How do i do the drive cycle on a 1997 nissan pathfinder


The following drive cycle can be used as a guide to assist with re-setting monitors when a vehicle specific drive cycle cannot be located. This OBDII drive cycle begins with a cold start (coolant temperature below 122 degrees F and the coolant and air temperature sensors within 11 degrees of one another). This condition can be achieved by allowing the vehicle to "sit" overnight, and then by beginning the drive cycle the next day. Most drive cycles will be difficult to follow exactly under normal driving conditions, so the driver should exercise caution, road safety, and courtesy to others.
  1. . Start the engine. Idle the engine in drive for two and a half minutes with the A/C and rear defroster on.
  2. Turn the A/C and rear defrost off, and accelerate to 55 mph at half throttle.
  3. Hold at a steady speed of 55 mph for three minutes.
  4. Decelerate (coast down) to 20 mph without braking or depressing the clutch.
  5. Accelerate back to 55 to 60 mph at ¾ throttle.
  6. Hold at a steady speed of 55 to 60 mph for five minutes.
  7. Decelerate (coast down) to a stop without braking.

Sep 17, 2010 | 1997 Nissan Pathfinder

1 Answer

CHUGGING FEELING


I had a very similar problem. I work at a ford dealership so, I had a tech look for codes. He found a trouble code, He took my 'MAF' mass air flow censor apart and cleaned it (it had some gunk on it). He then disconnected the battery to reset the computer then, reconnected it. Problem solved! more power, starts better, runs better even better mpg. remember to unhook the battery to reset computer and when you do, hold the brake pedal down for about a minute to drain the power from all the capacitors before you reconnect the battery. Hope this helps good luck, Sean

Jul 15, 2008 | 1988 Ford Tempo

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