GM

GM repair problems? Ask a GM repair expert now.

Ask an Expert,
Get an Answer ASAP!

I have a 02 Astro van it's got the 4.3 Vortec and it started…

Customer Question
I have a 02...

I have a 02 Astro van it's got the 4.3 Vortec and it started missing when it's wet

Mechanic's Assistant: Will the headlights turn on? Is the battery fully charged?

Yes the van will run down the road perfect but it misses

Mechanic's Assistant: Are you fixing your Astro yourself? What have you tried so far?

This problem just started two days ago I haven't done nothing to it

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Not really I just need to know why it's missing

Submitted: 7 months ago.Category: GM
Show More
Show Less
Ask Your Own GM Question
Answered in 5 minutes by:
1/11/2018
GM Mechanic: rpmdiag, Tech and Instructor replied 7 months ago
rpmdiag
rpmdiag, Tech and Instructor
Category: GM
Satisfied Customers: 9,122
Experience: Since 1975
Verified

Hi,I'm Ron and i will be helping you today.
Stand by for a moment while I prepare your answer.

Ask Your Own GM Question
Customer reply replied 7 months ago
Ok
GM Mechanic: rpmdiag, Tech and Instructor replied 7 months ago

The most common cause is the connectors for injectors and spark plugs under the hood. You need to clean these pins and apply dielectric grease to them to avoid this from happening again. Moisture will cause this all the time.

Please understand that I don't know your skill level or tools
you have to assist us. Also understand that I can't see, smell,
hear, or touch the vehicle either, so your patience is
appreciated. JA is a great Q/A site, but it does not replace a
repair shop. So please don’t shoot the messenger if I have to
deliver bad news:)
If you are satisfied with my answer, I would greatly
appreciate a 5 star rating now before you leave the site and I
will still assist you after you have rated me too if another
question pops up. I don’t get credit for helping you until
you rate me

Thanks, Ron

Ask Your Own GM Question
GM Mechanic: rpmdiag, Tech and Instructor replied 7 months ago

Did you have any more questions for me at this time?

Thanks again, Ron

Ask Your Own GM Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a gm mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask rpmdiag Your Own Question
rpmdiag
rpmdiag
rpmdiag, Tech and Instructor
Category: GM
Satisfied Customers: 9,122
9,122 Satisfied Customers
Experience: Since 1975

rpmdiag 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:

I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money.

Todd LRochester NY

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

< Previous | Next >

Meet the Experts:

GM Tech (Cam)

GM Tech (Cam)

GMC Mechanic

5,844 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Gary

Gary

GMC Technician

1,561 satisfied customers

15 years gm master tech/15 years ASE master tech

car tech

car tech

ASE Certified Technician

449 satisfied customers

25 year master tech and shop owner

Chris (aka- Moose)

Chris (aka- Moose)

GMC Technician

234 satisfied customers

16 years of experience

Paul M ASE Master

Paul M ASE Master

ASE Master Tech

187 satisfied customers

ASE Master Tech 20+ Years

Anthony

Anthony

GMC Technician

489 satisfied customers

GM Certified

Amedee

Amedee

GMC Technician

470 satisfied customers

ASE certified tech with advanced level specialist. Wisconsin certified emissions state inspector

< Previous | Next >

Related GM Questions
GM astrovan: 1998 astro van 4.3 missfire plugs wires cap
1998 astro van 4.3 missfire plugs wires cap rotor have been changed runs ok for 3 months snow wet weather seem to affect it. any long lasting solutions to this problem… read more
GM Tech (Cam)
GM Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
5,844 satisfied customers
GM Silverado 1500: I own a 2002 chevy silverdo 1500 4.3litre
I own a 2002 chevy silverdo 1500 4.3litre vortec engine. it is running horribly bad idling rough, missing then it will idle at a high rpm and eventually it shuts down. I have recently had the fuel pum… read more
Gary
Gary
GMC Technician
Vocational, Technical or Trade Scho
1,561 satisfied customers
GM Gmc K1500: 96Gmc 5.7 Vortec engine light has been on for
96Gmc 5.7 Vortec engine light has been on for a long time - -re0placed the crank sensor - n just replaced the dist cap and rotor - - engine has been running fine until a week ago after sitting for a c… read more
GmXavier
GmXavier
Associate Degree
50 satisfied customers
2002 safari: rebuilt..reverse..gas faster it lurches..control valve
I have a 2002 safari ext van 4.3 V6 Vortec, rebuilt 30 k ago, van has 150k miles when I start it up the past couple of weeks in reverse it kinda fluttered and had a rought idle, now the idle is so so … read more
Gary
Gary
GMC Technician
Vocational, Technical or Trade Scho
1,561 satisfied customers
99 astro: firing stalls at stops..cap,plugs wires, coil..mechanics
99 astro runs great until it rains or mositure in the air, then it is very hard to start, engine miss very bad back firing stalls at stops, only when damp or wet outside , have changed cap,plugs wires… read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
2003 chevy Astro: rwd..rain on 95 south..runs good..road
I have 2003 chevy Astro Van RWD ..I get rear end vibration only when It rains ...? I was driving and ran into rain on 95 south and got rear end vibration..this happen 3 times last month...it runs good… read more
Ivan
Ivan
Automotive Instructor
Vocational, Technical or Trade Scho
3,337 satisfied customers
1994 gmc safari van: 4.3 vortec tbi .It..starts right..idles..hill
Today we have a 1994 gmc safari van with a 4.3 vortec TBI .It had a complete tune up last fall with all really good parts. It starts right up and idles pretty good ,but when driving it, it will chuggl… read more
Randall
Randall
Auto Technician / Consultant
Vocational, Technical or Trade Scho
69 satisfied customers
2000 safaris: it rains they wont start..ve replaced..rotor
I have to 2000 safaris and every time it rains they won't start. I've replaced the coiling wires and And rotor twice now even had it done by garage. The second time same problem. How do you solve this… read more
Jerry Newton
Jerry Newton
Vocational, Technical or Trade Scho
2,066 satisfied customers
93 sierra: warming..spark from coil is hot ,spark across plug appears
my 93 sierra 4.3 with 135000 miles will not start, after warming up. spark from coil is hot ,spark across plug appears good. just started this problem a few days ago. a small shot of either makes it s… read more
Jettadan1
Jettadan1
Lead mech
Some college
1,421 satisfied customers
my 2005 1500 van with a 4.3..new fuel pump..fuel pressure
im working on my 2005 1500 van with a 4.3 it started out surging at shift points like it was running out of gas then i got to where it would only idle when you hit the gas theres nothing there it jusy… read more
GM Tech (Cam)
GM Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
5,844 satisfied customers
1993 GMC Sonoma: Cab..pickup..rough idle..a miss at cruising speed
Hi, I have a 1993 GMC Sonoma Club Cab pickup with the 4.3 Vortec, and it has an extremely rough idle. It even seems to have a miss at cruising speed. I just bought this truck about 3 weeks ago. I have… read more
zzdaryl
zzdaryl
Lead Auto Tech
Some college and advanced training
4 satisfied customers
2001 gmc sonoma: fuel flter fuel pressure reg..start without..vortec
i have a 2001 gmc sonoma about 2months ago it got to where i would have to turn it over about 2 or 3 times before it woud start then it would start andrun fine and it has gradually gotten worse now i … read more
Jerry Newton
Jerry Newton
Vocational, Technical or Trade Scho
2,066 satisfied customers
Astro: cyclinder..it start to run for half a second and then it turns
I have a Astro Van 1998, 6 cyclinder, 4.3 votec motor CSFI engine. When I try to start it, it start to run for half a second and then it turns off.… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
2002 gmc: sonata..a 4.3 vortec v..plugs wires..distributor cap
I am having problems with a 2002 gmc sonama with a 4.3 vortec v-6 installed new plugs wires distributor cap and rotar a few weeks ago. Having problems with it missing. Changed the modual in the distri… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
96 GMC Sierra 1500: 4.3 L Vortec V6, Vin W; on Firday..radiator..drove
I'm not exactly sure what I have here, but here gies. I have a 96 GMC Sierra 1500 4X4 4.3 L Vortec V6, Vin W; on Firday, I flushed and filled the radiator, changed oil etc, it drove great all day frid… read more
Expert-Repair
Expert-Repair
Owner Kingsland Auto & Marine Services
Vocational, Technical or Trade Scho
11 satisfied customers
GM: van with a v-6..tune ups, gas pump replacement..fuel pump
I am fighting a vapor lock problem on my GM Vandura 3500 box van with a v-6. I have done the normal things from tune ups, gas pump replacement, computer replacement, fuel relay, clean connection, etc.… read more
GMKindl
GMKindl
Associate Degree
249 satisfied customers
fuel system..vacuum..egr and iac motor replaced and on spec, etc..rpms
I have a 4.3 vortec low grade engine vibration which is significant at idle in gear. I have had the fuel system cleaned and checked, the vacuum system is on spec, the plugs etc. are new (engine not mi… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
blown..module..has good fuel pressure runs at low speed but falls
2003 jimmy 4.3 has blown its 3ed ignistion module? has good fuel pressure runs at low speed but falls on its face when gassing it. has taken out last two over 65 days they last about 30 days.… read more
RussMasterTech
RussMasterTech
GM Service Technician
3 Years College
546 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