Chevy

Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

1999 chevy s-10 4.3 liter may need ecm unit replaced. I have…

Customer Question
1999 chevy s-10 4.3...

1999 chevy s-10 4.3 liter may need ecm unit replaced. I have replaced nearly everything else.

Mechanic's Assistant: Are you fixing your S10 yourself? What have you tried so far?

This week new spark plugs, distributor cap, rotor. All Gm. Also crank sensor. More

Mechanic's Assistant: Does the vehicle stall at low speeds? Does it sputter?

Fuel injection spider, mass air flow sensor. Has multiple cylinder misfire, random from my code scanner.

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

Truck has only 108000 miles

Submitted: 7 months ago.Category: Chevy
Show More
Show Less
Ask Your Own Chevy Question
Answered in 6 minutes by:
12/15/2017
Chevy Mechanic: Gary, Chevy Technician replied 7 months ago
Gary
Gary, Chevy Technician
Category: Chevy
Satisfied Customers: 18,018
Experience: 15 years GM master tech
Verified

Welcome! My name is ***** ***** I will do my best to assist you with this problem.Ask me about added features such as phone contact anytime if you wish !

Ask Your Own Chevy Question
Chevy Mechanic: Gary, Chevy Technician replied 7 months ago

what is this not doing or doing ?

Ask Your Own Chevy Question
Chevy Mechanic: Gary, Chevy Technician replied 7 months ago

please tel me

Ask Your Own Chevy Question
Customer reply replied 7 months ago
Running out of things to replace to stop my check engine light coming back on.
Chevy Mechanic: Gary, Chevy Technician replied 7 months ago

what is the code being set or codes ?

Ask Your Own Chevy Question
Customer reply replied 7 months ago
I'm ready to try replacing the pug wires again. Then maybe the electronic control module.
Chevy Mechanic: Gary, Chevy Technician replied 7 months ago

can you tell me the codes set ?

what is it doing ?

Ask Your Own Chevy Question
Customer reply replied 7 months ago
p300. Random multiple missfire
Customer reply replied 7 months ago
Truck has only 108,000 miles. New spark plugs, distributor, cap and rotor. GM. New coil. Throttle position sensor, crankshaft sensor, fuel injector spider.
Customer reply replied 7 months ago
still there?
Customer reply replied 7 months ago
No answer yet.
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a chevy mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15,659
15,659 Satisfied Customers
Experience: GM Grand Master Technician 2007. 14 years experience.

GM Tech (Cam) 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)

Chevy Technician

15,659 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Gary

Gary

Chevy Technician

18,018 satisfied customers

15 years GM master tech

Tim&#039;s Auto Repair

Tim's Auto Repair

mechanic

8,884 satisfied customers

Have owned a repair shop for 25 yrs.

Dave Nova

Dave Nova

Chevrolet Technician

7,092 satisfied customers

ASE Master Certification. GM World Class Certification

John

John

Master A.S.E Automotive technician

4,071 satisfied customers

A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician

Don - Mo Lurch

Don - Mo Lurch

Auto Mech / Electronics

2,948 satisfied customers

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

Ron Z.

Ron Z.

- Chevy Tech -

2,822 satisfied customers

18+yrs experience. State Inspector and Chevy Diagnostics

< Previous | Next >

Related Chevy Questions
Misfire. A friend told me it might be the pcm, 179000. It
179000. It changes from cylinder four to random multiple misfire. … read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
5,159 satisfied customers
Cylinder misfire on # 3 after complete replace spark plugs,
cylinder misfire on # 3 after complete replace spark plugs, wires, distributor cap and rotor. Scan tool says misfire on 3 … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
5,661 satisfied customers
2002 chevy express van 2500 5.7l Ijust replace the
2002 chevy express van 2500 5.7l Ijust replace the distributor cap,rotor button,o2 sensor. now getting p0756 code,truck wont idle, if floored it takes off like a rocket no shifting problems,no backfir… read more
AZTechBrian
AZTechBrian
ASE Certified Technician & Shop Owner
Vocational, Technical or Trade School
732 satisfied customers
I have a 1997 chevy silverado and am having misfires on
I have a 1997 chevy silverado and am having misfires on cylinders 4,6,3,5. I replaced plugs,wires,cap rotor and spider injector unit,i have also pulled the distributor to make sure the gear and shaft … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
5,661 satisfied customers
96 S10 with 4.3 has 54k gives code 300 have new plugs,plug
96 S10 with 4.3 has 54k gives code 300 have new plugs,plug wires,coil,ignition module,rotor cap,distributor cap,pickup coil,crank sensor,converted from popit spider injection to multi port, changed ma… read more
Tim&#039;s Auto Repair
Tim's Auto Repair
mechanic
High School or GED
8,884 satisfied customers
Chevrolet Blazer: 2001 chevy blazer s10 4.3 liter multiple
2001 chevy blazer s10 4.3 liter multiple misfires. I've replaced the fuel injectors, and spider assembly. Engine only 3 years old with less than 10000 miles on it. Ive checked the crank shaft position… read more
Alex
Alex
Automotive Technician
Associate Degree
1,153 satisfied customers
1996 Chevy: V8..sputter..If I accelerate (gun it)..range, it runs fine
My 1996 Chevy 1500 5.7 V8 has issues running smoothly in a certain range. At around 55-65 it will start to sputter. If I accelerate (gun it) through this range, it runs fine. However, if I'm at cruisi… read more
Neal
Neal
Auto repair pro, 30 years experience
Associate Degree
1 satisfied customers
1999 Chevy Tahoe: p300..Misfires..running rough..idle and hesitates
Hello, I have a 1999 Chevy Tahoe with a 5.7 Vortex, it is coding P0300, Random Multiple Misfires, no other codes. It is running rough on idle and hesitates really bad. I can hear slight backfires at s… read more
GM Tech (Cam)
GM Tech (Cam)
Chevy Technician
Vocational, Technical or Trade Scho
15,659 satisfied customers
98 chevy: cyl..misfire..injectors..#5 wire, cap, rotor,camshaft pos
i have a 98 chevy silverado 5.7 liter (actually i have 2), on one of them we swapped the engine in april and its had a cyl 5 intermittent misfire.on the scanner it will miss, then stop for a while (di… read more
Dodge expert
Dodge expert
ASE MASTER TECH, REPAIR FACILITY OWNER
High School or GED
3,636 satisfied customers
2002 chevy astro: driven..the replacement distributor..rotor..cap
Looking for CAM. 2002 chevy astro van Previous distributor bad as it would move while vehicle being driven. niece to lazy to get the replacement distributor so she kept changing out the rotor and cap.… read more
GM Tech (Cam)
GM Tech (Cam)
Chevy Technician
Vocational, Technical or Trade Scho
15,659 satisfied customers
99 Chevy Astro AWD: (mechanics..Check Engine Light/hesitation
We have a 99 Chevy Astro AWD with 130Kmiles. It's been a great vehicle except for an ongoing problem that with have with needing to replace the distributor cap/rotor. About 5 years ago, it was once/ye… read more
Dave Nova
Dave Nova
Chevrolet Technician
Associate Degree
7,092 satisfied customers
10 4.3 ses light came on checked code p0301..manifold..ecm..cylinder
2001 s-10 4.3 ses light came on checked code p0301 replaced complete fuel system under manifold with updated type, SEs on again code po301 checked complete electrical from ecm to spider no broken wire… read more
GM Tech (Cam)
GM Tech (Cam)
Chevy Technician
Vocational, Technical or Trade Scho
15,659 satisfied customers
Silverado 1500: crankshaft position sensor..test drive..engine misfire
2000 4.3 silverado 1500. New crankshaft position sensor. On test drive, random engine misfire. Now, new pugs, cables dist. cap and rotor, fuel pump and fuel pressure regulator. Only 56 psi andom rando… read more
GM Tech (Cam)
GM Tech (Cam)
Chevy Technician
Vocational, Technical or Trade Scho
15,659 satisfied customers
2000 chevy blazer: mass air flow sensor, egr valve..rotor
i have a 2000 chevy blazer s-10 random misfires, have replaced mass air flow sensor, egr valve, distributor cap and rotor, and also plugs and wires. still runs like crap. 4.3 4x4… read more
Tim&#039;s Auto Repair
Tim's Auto Repair
mechanic
High School or GED
8,884 satisfied customers
96 Chevy s10: pickup..check engine light..misfire..the distributor
96 Chevy s10 pickup, 4.3 Getting check engine light, po300, random multiple misfire, could this be the distributor, coil, or what could it be?… read more
cartech
cartech
master tech
High School or GED
3,324 satisfied customers
97 s10: vin..my truck stumbles and multiple cylinder misfire
hi I have a 97 s10 4.3 vin x when i step on the throttle pedal my truck stumbles and multiple cylinder misfire. If i step on the throttle and rev as soon as i start it it revs fine for about 5 seconds… read more
Hank B
Hank B
Owner/ Technician
Vocational, Technical or Trade Scho
109 satisfied customers
97 Blazer: o2 sensor code..pulling a 0300 code for a random misfire
I have a 97 Blazer with a 4.3, yesterday it pulled a o2 sensor code, and a #2 misfire, I changed the o2 sensor and the plug on #2 (the plug was black when I pulled it out), and now it's pulling a 0300… read more
Jeremy Phipps
Jeremy Phipps
Lead Technician
Vocational, Technical or Trade Scho
72 satisfied customers
2005 chevy astro: a 4.3 litre vortec dtc code..p300..misfire code
i have a 2005 chevy astro van with a 4.3 litre vortec dtc code p0300 randon/multiple cylnder misfire code is set. changed all plugs and wires and code still sets any suggestions..... car also recently… read more
GM Tech (Cam)
GM Tech (Cam)
Chevy Technician
Vocational, Technical or Trade Scho
15,659 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