GMC

GMC Troubleshooting Questions? Ask a Mechanic for Answers

Ask an Expert,
Get an Answer ASAP!

GMC

We have a 02 GMC Sonoma with 4.3 engine that has had the Fuel

Customer Question
We have a 02 GMC...
We have a 02 GMC Sonoma with 4.3 engine that has had the Fuel Pump replaced and Spider Injector Cluster Replaced. The vehicle still will only start when have carb cleaner sprayed into the throttle body.
Submitted: 2 years ago.Category: GMC
Show More
Show Less
Ask Your Own GMC Question
Answered in 4 minutes by:
7/14/2015
GMC Mechanic: Gary, ASE Certified Technician replied 2 years ago
Gary
Gary, ASE Certified Technician
Category: GMC
Satisfied Customers: 17,485
Experience: GCM master tech over 25 years
Verified
I am sorry for the long waitcan you unplug the big connector on top of the fuel injector and there are 12 terminals in that connector you unplugged with the key ON do 6 show 12 volts ?if so then connect your test light to a confirmed good 12 volts at the battery and when cranking it over do the other 6 blink your test light bulb when cranking it over ?
Ask Your Own GMC Question
Customer reply replied 2 years ago
Working on that test right now!
GMC Mechanic: Gary, ASE Certified Technician replied 2 years ago
ok nu rushalso when you have the key on and are cranking it what is the security / theft light doing ?
Ask Your Own GMC Question
Customer reply replied 2 years ago
We have a friend that works for our local chevy dealer and he had ruled out the theft system when he stopped over before we did the spider cluster, but he is on vacation now that we have installed the spider cluster
GMC Mechanic: Gary, ASE Certified Technician replied 2 years ago
ok if your 100 % sure the theft system is NOT the issue then do that test with the test light and tell me if you missing the 6 showing 12 volts with the key on or the 6 are not blinking a ground
Ask Your Own GMC Question
Customer reply replied 2 years ago
All 6 injector pulses were lighting with a noid light
GMC Mechanic: Gary, ASE Certified Technician replied 2 years ago
key ON engine OFF what is the fuel pressure at the fuel test port drivers side rear of the engine near the distributor ?
Ask Your Own GMC Question
Customer reply replied 2 years ago
60 psi
GMC Mechanic: Gary, ASE Certified Technician replied 2 years ago
and this will run on starting fluid ? with 60 PSI of fuel pressure and 6 terminals showing 12 volts and 6 blinking when cranking it over ?
Ask Your Own GMC Question
Customer reply replied 2 years ago
Yes, it will
GMC Mechanic: Gary, ASE Certified Technician replied 2 years ago
6 where blinking a ground when cranking it over ?if so if you unplug the 2 wire engine coolant temp sensor will it start up ? if not plug that back in and unplug the TPS will it run ?
Ask Your Own GMC Question
GMC Mechanic: Gary, ASE Certified Technician replied 2 years ago
if it will not run we need to take a fuel sample in a glass jar and fill it up over 1/2 way and then let it sit for 10 minutes do you see any separation at all ?gas will float on top of waterif it has fuel pressure and a good pulse and will run on starting fluid and NO codes set and unplugging the ECT and TPS it will not run either the fuel in contaminated with water or something OR the injection spider is bad
Ask Your Own GMC Question
Customer reply replied 2 years ago
We tried to unplug the 2 wire engine coolant temp senor and would not start and we plugged it back in and unplugged the TPS and did not run.
GMC Mechanic: Gary, ASE Certified Technician replied 2 years ago
if it has fuel pressure and a good pulse and will run on starting fluid and NO codes set and unplugging the ECT and TPS it will not run either the fuel in contaminated with water or something OR the injection spider is badcheck the fuel like i said if its 100 % good then pull the upper intake and pop out the injectors out of the intake and when cranking it over do you see fuel pulse out of the injectors good ?
Ask Your Own GMC Question
GMC Mechanic: Gary, ASE Certified Technician replied 2 years ago
also please make sure the injectors are in the correct cylinders
Ask Your Own GMC Question
Ask Gary Your Own Question
Gary
Gary
Gary, ASE Certified Technician
Category: GMC
Satisfied Customers: 17,485
17,485 Satisfied Customers
Experience: GCM master tech over 25 years

Gary 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)

GMC Mechanic

1,696 satisfied customers

GM Grand Master Technician 2007. 14 year experience.

Gary

Gary

ASE Certified Technician

17,485 satisfied customers

GCM master tech over 25 years

Dave Nova

Dave Nova

GMC Technician

929 satisfied customers

ASE Master Certification. GM World Class Certification

Chris (aka-Moose)

Chris (aka-Moose)

GMC Technician

583 satisfied customers

16 years of experience

Ron Z.

Ron Z.

- GMC Tech -

259 satisfied customers

18+yrs experience. State Inspector & GMC Diagnostics/Repair

George H.

George H.

ASE MasterTechnician

227 satisfied customers

15+ Years ASE Master Technician with Level 1 Certification

Don - Mo Lurch

Don - Mo Lurch

ASE Certified Technician

218 satisfied customers

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

< Previous | Next >

Related GMC Questions
Battery will not charge. new battery and new alternator. The
battery will not charge. new battery and new alternator … read more
Cesar Jimenez
Cesar Jimenez
Owner/CEO
Vocational, Technical or Trade School
81 satisfied customers
I have a brand new battery in but my battery level sits at
I have a brand new battery in but my battery level sits at about 11 on the cluster and won't turn on, if I boost it the truck starts and runs normal but if I turn the truck off the truck immediately w… read more
Mechanic01
Mechanic01
1,645 satisfied customers
New battery drains overnight. No but the battery is new. The
No but the battery is new. The same thing happened before the battery was replaced. … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
I just bought a new battery at autozone and they put it in
I just bought a new battery at autozone and they put it in but the next day when I tried to put 2006 gmc envoy into two wheel drive from auto it just flashes and then moves to four wheel drive high. I… read more
tim37857
tim37857
Mechanic
High School or GED
71 satisfied customers
It will Not start. We tried a new battery- its not the
We tried a new battery- its not the battery, nothing is corroded … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,370 satisfied customers
While running sucks all life from the battery. It is a brand
had problems installed battery idled for 1 hour then would not start as battery was dead … read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
97 satisfied customers
Is it normal for a car battery voltage increase after trying
Is it normal for a car battery voltage increase after trying to unsuccessfully start the car and then letting it sit for several moments?… read more
Gary
Gary
ASE Certified Technician
17,485 satisfied customers
Battery fully charged but when the remote is in proximity
battery fully charged but when the remote is in proximity and brake is depressed nothing happens … read more
GM Bob
GM Bob
Automobile Technician
High School or GED
1,002 satisfied customers
Coolant leaking around right bank second from front
Coolant leaking around right bank second from front injector, we pulled the injector and we see coolant at the bottom of the hole, please advise? … read more
TIM MOHR
TIM MOHR
SHOP OWNER
Master's Degree
8,037 satisfied customers
Remote start won't work-changed batteries in remotes and
remote start won't work-changed batteries in remotes and still no luck … read more
GM Bob
GM Bob
Automobile Technician
High School or GED
1,002 satisfied customers
Replaced original battery with an Exide, 18 months later
replaced original battery with an Exide, 18 months later battery will not keep voltage if car sits for 4 days. Replaced battery under warranty from Exide, Worked for another 18 months same problem. If… read more
Todd M
Todd M
Owner
ASE Certification
1,475 satisfied customers
Idle engine. 285000 VVM envoy 2003 XL. Also battery not
This just happened todayhvnt had a chance to do anything as yet… read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
583 satisfied customers
Battery saver light came on. Battery test with the engine
Battery saver light came on. Battery test with the engine off at 12.7 VDC, With the engine running at an idle 15.7 VDC. Trying to locate the issue … read more
Mechanic01
Mechanic01
1,645 satisfied customers
Will not idle, just noticed that the negative battery cable
Will not idle, just noticed that the negative battery cable is disconnected, also there is a hollow line along the drivers side just under the hood that is broken. Not sure if this is causing the stal… read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,370 satisfied customers
Battery is dead all of a sudden. symble on dash = Battery
battery is dead all of a sudden. symble on dash = Battery malfunction It's a 2013 Acadia … read more
AZTechBrian
AZTechBrian
ASE Certified Technician & Shop Owner
Vocational, Technical or Trade School
732 satisfied customers
I have a 2011 diesel 6.6 it's wasting coolant and the oil
I have a 2011 diesel 6.6 it's wasting coolant and the oil seems with water, also the pression coolant reservoir is black and oily. can you tel me if the problem is in the heads or in the engine block?… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
Battery light was on this am but alt is charging. Battery
Battery light was on this am but alt is charging. Battery was dead but is 6 years old. … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
2006 GMC savana 3500 6.6 low coolant light res was replaced
2006 GMC savana 3500 6.6 low coolant light res was replaced varified sensor open and closes replaces connector (broken wire) check resisdence on ground good and green wire to pcm replaced pcm and flas… read more
Jerry Newton
Jerry Newton
Vocational, Technical or Trade Scho
2,066 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