Pontiac

Pontiac Problems? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Pontiac

Why won't my 2003 grand am start in mourning or humid

Customer Question
weather...
why won't my 2003 grand am start in mourning or humid weather
Submitted: 1 year ago.Category: Pontiac
Ask Your Own Pontiac Question
Answered in 5 minutes by:
7/30/2016
Pontiac Mechanic: Master Auto Tech., A.S.E. Certified Master Technician replied 1 year ago
Master Auto Tech.
Master Auto Tech., A.S.E. Certified Master Technician
Category: Pontiac
Satisfied Customers: 612
Experience: over 20 years repairing both import and domestic automobiles
Verified

I'm sorry you are having problems with your vehicle. I will try to help.

I'm a full time mechanic and have been a mechanic for over 20 yrs and I work part-time here on JustAnswer to help you and others repair their own vehicles, and I get credited by your ratings.. So before leaving the site make sure and leave me a rating. You can still reply to me as many times as neeed, even after the rating.. I will need for you to be my hands and eyes since I'm not there.

So generally it is because of being in a real need of a tune up. I am assuming you have the v6 in your as they generally had a rougher time when in need of a tune up with this problem. The wires and coils will not deliver the spark needed to the plugs in humid weather as the insulation has broken down and the humid air allows the spark to go elsewhere.

Let me know which engine you have and how long it has been since you have had a tune up.

​Thanks

Sonny

Ask Your Own Pontiac Question
Customer reply replied 1 year ago
just bought car has v6 drove it home 100mile everything fine then wont start in mournings sometimes starts at night replaced ignition module yesterday and still doesnt start tested 1 sparkplug wire and it had spark dont no what to do
Customer reply replied 1 year ago
only has 88600miles on car runs good when it is running didnt replace coils because 1 had spark could they still be bad
Pontiac Mechanic: Master Auto Tech., A.S.E. Certified Master Technician replied 1 year ago
the could still be bad. 99.9% of the time it's the wires and plugs when this happens. You can test the coils, when this is occurring take 2 plug wires off the same coil and have someone turn it over and see if the spark will jump the gap to the other coil tower on the same coil.
Also when it's starting fine you can take a spray bottle and with it running most water onto the wires and coils and see if you can see any sparks anywhere from the ign system. Do that at night it's better to see the spark.Let me know what happens.But I can almost guarantee you it needs the tuneup and a slight possibility of a coil or two.Let me know what you find.Thanks
Sonny
Ask Your Own Pontiac Question
Customer reply replied 1 year ago
wouldn't run bad if it was the plugs or wires it seemed to run good when it did run
Pontiac Mechanic: Master Auto Tech., A.S.E. Certified Master Technician replied 1 year ago
They can work fine in dry conditions but as the insulation breaks down the moister in the air gives it enough of an out for the spark to travel else where. And when it's starting it requires extra voltage on the spark so if the system has degraded enough you won't be able to start it. And if they are original wires and plugs and even coils then it's time for a tune up. Technically the manufacture recommends 5 years for a tuneup if the mileage isn't reached. And an 03 has been 13years. Anytime a car has a hard start or no start in moist conditions such as raining or mornings it's 99.9% of the time tuneup related. .01% of the time it's something else like s connector or crank sensor. But when it's not starting if you have some spark then it's not the crank sensor.
I can almost guarantee you it's the tuneup.
Ask Your Own Pontiac Question
Pontiac Mechanic: Master Auto Tech., A.S.E. Certified Master Technician replied 1 year ago
Do the tests I mentioned with the spray bottle and the wires and the coil test at night and I bet you will see arcing coming from a or the wires and or coils. Also watch the towers where the wires hook on. Spark will run down them and out as well.
Ask Your Own Pontiac Question
Pontiac Mechanic: Master Auto Tech., A.S.E. Certified Master Technician replied 1 year ago
I'll be signing off till early tomorrow morning. But do the tests I mentioned and let me know what happens.Thanks
Sonny
Ask Your Own Pontiac Question
Customer reply replied 1 year ago
just tried each coil and it arched between towers on all 3 coils
Pontiac Mechanic: Master Auto Tech., A.S.E. Certified Master Technician replied 1 year ago
Ok. So now when it gets dark. Spray the wires down with water and watch for arcing. Spray them down from one end to the other. And on the coils.
Ask Your Own Pontiac Question
Pontiac Mechanic: Master Auto Tech., A.S.E. Certified Master Technician replied 1 year ago
You can do it with it running or not. It doesn't matter. But running is probably better as it's not as big of a strain on the battery
Ask Your Own Pontiac Question
Customer reply replied 1 year ago
if i see arching thats what want or i shouldnt see any
Customer reply replied 1 year ago
if i just put new wires and pluggs is there a certain kind you recommend
Pontiac Mechanic: Master Auto Tech., A.S.E. Certified Master Technician replied 1 year ago
Arcing is bad. It means the wires are degraded. And any will be better then what you have but denso or AC delco wires will be the best but the autolite professional's are ok too. And acdelco plugs or denso or Bosch plugs are good.
Ask Your Own Pontiac Question
Pontiac Mechanic: Master Auto Tech., A.S.E. Certified Master Technician replied 1 year ago
I strive to provide 5 star service. If I have satisfactorily answered your question please rate it as such and hit submit. Doing so is the only way I get compensated for my time. Also it doesn't close the discussion so we will still be able to communicate if there are further questions.
Thanks
Sonny
Ask Your Own Pontiac Question
Customer reply replied 1 year ago
yeah i sprayed the water on lines and coil and there was no arching anywhere and the wires actually look new
Pontiac Mechanic: Master Auto Tech., A.S.E. Certified Master Technician replied 1 year ago

ok, so did it run the same when you sprayed the wires and coils?

Ask Your Own Pontiac Question
Customer reply replied 1 year ago
no, it won't start
Pontiac Mechanic: Master Auto Tech., A.S.E. Certified Master Technician replied 1 year ago

what did you use to spray the wires? a water bottle or a hose?

Ask Your Own Pontiac Question
Customer reply replied 1 year ago
spray bottle then cleaned off after i was done
Pontiac Mechanic: Master Auto Tech., A.S.E. Certified Master Technician replied 1 year ago

ok so I still am sure that it is the wires or coils. even if you don't see arcing they can still be bad.

Did you try it with it running? or was the car off?

Ask Your Own Pontiac Question
Customer reply replied 1 year ago
i said it won't run i had someone turn over while i watched
Pontiac Mechanic: Master Auto Tech., A.S.E. Certified Master Technician replied 1 year ago
Awe. It might not arc when it's not running.Ok so it runs sometimes but not when it's humid out? When was the last time it ran?
Ask Your Own Pontiac Question
Pontiac Mechanic: Master Auto Tech., A.S.E. Certified Master Technician replied 1 year ago

do you still need help with this? please let me know.

Ask Your Own Pontiac Question
Ask Master Auto Tech. Your Own Question
Master Auto Tech.
Master Auto Tech.
Master Auto Tech., A.S.E. Certified Master Technician
Category: Pontiac
Satisfied Customers: 612
612 Satisfied Customers
Experience: over 20 years repairing both import and domestic automobiles

Master Auto Tech. is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

GM Tech (Cam)

GM Tech (Cam)

Pontiac Technician

2,379 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Dave Nova

Dave Nova

Pontiac Technician

2,014 satisfied customers

ASE Master Certification. GM World Class Certification

Gary

Gary

Pontiac Technician

1,436 satisfied customers

15 years GM master tech/15 years ASE master

Ron Z.

Ron Z.

- Pontiac Tech -

761 satisfied customers

18+yrs experience. State Inspector and Pontiac Diagnostics

Don - Mo Lurch

Don - Mo Lurch

Pontiac Mechanic

551 satisfied customers

GM, Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.

John

John

GM FACTORY CERTIFIED TECHNICIAN

514 satisfied customers

ASE A1-A8 w/L1 GM master technician.Factory certified/40 years experience

car tech

car tech

ASE Certified Technician

446 satisfied customers

25 years master tech and shop owner

< Previous | Next >

Related Pontiac Questions
How can I check the left front door latch actuator on my
How can I check the left front door latch actuator on my 2008 Pontiac G6 fd sedan before I re- install it? … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,393 satisfied customers
My car is saying that there is a door ajar. This just
My done light will sometimes go off. Sometimes it will start to go off then come back on… read more
Todd M
Todd M
Owner
ASE Certification
1,476 satisfied customers
I parked the car and turned everything that I could off, but
I parked the car and turned everything that I could off, but the parking lights are still on and there doesn't seem to be anything I can do to get them to turn off. … read more
Todd Audette
Todd Audette
Automotive Technician
Vocational High School
132 satisfied customers
2007 Pontiac torrent 3.4L codes: P0404, EGR position
2007 Pontiac torrent 3.4L codes: P0404, EGR position performance P1779, torque delivered signal common cause for these codes? Vehicle has a new OEM EGR… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
I bought factory replacement speakers for a 99 Pontiac Grand
I bought factory replacement speakers for a 99 Pontiac Grand AM GT. The factory speakers had two connectors but the new speakers have one. How can I get the factory am to kick in if it's not connected… read more
Mechanic01
Mechanic01
1,645 satisfied customers
97 firebird no power to the instrument cluster and will not
97 firebird no power to the instrument cluster and will not start. checked the battery and unhooked it. … read more
Chris (aka - Moose)
Chris (aka - Moose)
Vocational, Technical or Trade Scho
108 satisfied customers
No heat. And yes. 2006 Pontiac grand p. Chances thermostat,
keep getting air in system , also have bad lower intake… read more
Chris (aka - Moose)
Chris (aka - Moose)
Vocational, Technical or Trade Scho
108 satisfied customers
Have a crank sensor gone bad but there are two crank sensors
Have a crank sensor gone bad but there are two crank sensors apparently but when it comes up on computer it says crank sensor a but no one seems to know which one a is … read more
Joecamel90
Joecamel90
Technician
Associate Degree
24 satisfied customers
I have an 05 Pontiac Vibe base model 5 speed manual
I have an 05 Pontiac Vibe base model 5 speed manual transmission I replaced the clutch pedal sensor twice car still won't start any ideas … read more
Peter Bagley
Peter Bagley
master technition
Vocational, Technical or Trade School
1,008 satisfied customers
Rough idle at 200 degrees running temp, wants to stall.
Rough idle at 200 degrees running temp, wants to stall … read more
Mechanic01
Mechanic01
1,645 satisfied customers
I have a 2000 Grand am gt and I'm having it throw some
Hi I have a 2000 Grand am gt and I'm having it throw some lights on the dash ONLY when I turn the fan on on the climate control. No codes appear when I scan the vehicle tho. … read more
Peter Concannon
Peter Concannon
Construction, Plant Fitter
57 satisfied customers
Not start. I have change my 2 fronts stwoke and now in dash
I have change my 2 fronts stwoke and now in dash i have no engine ligth and is whittin direct assit … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Was replacing the fuel pump and the new one has a different
Was replacing the fuel pump and the new one has a different connector the wires do not match up at least not in color … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
I have a 2001 Grand am that won't start. They are good. I
Yes, I have replaced the spark plugs they were wet. It started fine in the morning but would not start in the afternoon. … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,375 satisfied customers
2003 Pontiac Montana, 3.4 liter, 2-wheel drive. There are no
2003 Pontiac Montana, 3.4 liter, 2-wheel drive. There are no OBDII codes set, and no warning lights on the instrument cluster. Customer complained it was quitting while driving, at both city and highw… read more
ricardo hohl
ricardo hohl
automotive instructor
Associate Degree
1,818 satisfied customers
My 2004 Pontiac Grand am is having some issues. When my mom
Hi my name is ***** ***** my 2004 Pontiac Grand am is having some issues. When my mom drove it she said the car turned off on its own when she was taking a turn. Then when she started it back up the c… read more
roy
roy
Associate Degree
3 satisfied customers
2005 pontiac bonneville..car starts and idles fine for
2005 pontiac bonneville..car starts and idles fine for several minutes then sputters and dies.driving under load the car has no power but will run,will sometimes stall at stop sign ..took car to shop … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,375 satisfied customers
Lost my original key, had a new one cut for the car at
Lost my original key, had a new one cut for the car at GMC(pk3 key). I went through the 30 minute relearn process and have gotten stuck. … read more
Chris (aka - Moose)
Chris (aka - Moose)
Vocational, Technical or Trade Scho
108 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x