Question about 2000 Pontiac Sunfire

1 Answer

My 2000 is running rough on rainy days and fine on dry days. new wires and plugs

Runs well when it is dry outside. i just replaced the plugs and wires. still happening. new starter.

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.

    Welcome Back:

    Visited the website for 2 consecutive days.

  • Expert
  • 43 Answers

You may have a cracked coil, or a water leak to the fuse box (unlikely) but happens more than u think. never the less u have short that the water is grounding out. good luck

Posted on Nov 05, 2012

6 Suggested Answers

  • 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

  • 191 Answers

SOURCE: 96 firebird is having problems,

Have you ran a diagnotic check to see what codes are coming up?
Throwing parts at the problem will get expensive. It will also ruin other parts (Like your catalytic converter), when your engine is misfiring and not running properly. Your vehicle is an OBDII system, fix the problems in the order they appear (then clear, run and recheck)...meaning, one problem can cause another and so on. Fixing one problem may correct the other ones too.
You may get lucky with the shotgun approach, but usually not.
Run a diagnostic test, at least you'll know where to start looking for the problem.

Posted on Apr 24, 2009

SOURCE: 1998 Sunfire rough running (missfire) common causes?

check the coils my 98 had a crack coil that drove me nuts. If thats the problem make sure you replace both ignition coils

Posted on Jun 18, 2008

  • 166 Answers

SOURCE: 2000 Bonneville runs rough when cold

you need to get it zone will do it for free but most of the time it a o2 sensor or coolant sensor

Posted on Jul 17, 2009

  • 107 Answers

SOURCE: 1996 3.1l runs rough stutters under load let off

your car is famous for bad intake manifold try running car spray warm soapy water around the intake everywere look for bubbles ...if so salvage yard part $50.00

Posted on Jul 20, 2009

  • 410 Answers

SOURCE: 98 grand am runs rough at low rpms new cat plugs

Before you get carried away changing anything else, run injector cleaner through your tank of gas. I have patiently solved my idle problems several times like that. Consider our injectors are 10 years old now. Clean or change PCV as well. Dale

Posted on Jul 26, 2009

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

1997 4Runner 4wd, 6cyl Limited. Engine running rough. replaced plugs, wires, coils, fuel filter, and computer and still runs rough. I discovered codes on invoice of P0300 and P304. Have paid a lot of $$...

could have a dirty fuel injector, ad some cleaner to a half tank of fuel, you could have water in the tank and many other things. Are you getting any service lights? Does it run rough all the time or only on rainy days? p0300 and p0304 are both misfire codes, i would try cleaning the fuel injectors first.

Oct 06, 2013 | 2001 Toyota 4Runner

1 Answer

My 2000 blazer runs rough after warming up

Any trouble codes stored in the computer other than the catalytic converter ?
Anybody check base fuel pressure ?

Jul 07, 2013 | Cars & Trucks

1 Answer

2002 vw jetta runs rough and backfires in rain

spark plug wires need to be replace

Dec 20, 2012 | Cars & Trucks

2 Answers

I have a 2004 Ford Escape Limited with the 3.0 Duratec. So far it has been running fine during nice weather but when it rains heavily (Hurricane Irene and a past rainy day) it has been running pretty...

You can test yourself to see if you have a bad spark wire. Get a spray bottle of water (like an old windex bottle). At night, turn on the vehicle and spray the mist of water onto the spark plugs. It may crackle and you may see a spark. If you do then your plug wires may be at fault and should be replaced. You won't get shocked with a mist of sprayed water in these low amounts.

Aug 28, 2011 | Ford Escape Cars & Trucks

1 Answer

Timing off. Back fire. trouble starting on rainy days. Runs sluggish. Hesitation.

New plug wires, sometimes when they get old they start to arc out and just make your car run terrible, especially on rainy days.

Aug 01, 2009 | 1994 Buick Roadmaster

1 Answer

2000 hyundai elantra missing # 3

Check your plug lead or your coil pack for cracks.

Jun 08, 2009 | 2000 Hyundai Elantra

1 Answer

Car running rough when raining

check the spark plug wires, put water in a spray bottle and spray along the wires,especially by the coil,if the car starts to run bad or you see sparks, the wires are no good, hope this helps, Ray

Apr 03, 2009 | 1999 Mercury Villager

Not finding what you are looking for?
2000 Pontiac Sunfire Logo

191 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts


Level 3 Expert

75197 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7782 Answers

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

Answer questions

Manuals & User Guides