Chevy

Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

P0101, p0135, p0300. Mass air flow, ho2 senor b1s1. and

Customer Question
P0101, p0135, p0300 Mechanic's...

P0101, p0135, p0300

Mechanic's Assistant: What is the model/year of your Chevy?

Mass air flow, ho2 senor b1s1. and random misfire the random misfire is on cylinder 2. 2001 chevy blazer 4.3L CSFI

Mechanic's Assistant: How many miles are on the car? Is it a steady misfire? Or random?

144,000 random. actually only above speeds of 65 mph otherwise runs perfect do you know fuel pressure specs? i have gauge hooked up, cycle key on gets 40 psi and runs about 38-40

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

Fires right up, shut her down, holds pressure for most part car been off for about 15 mins and gauge dropped to 31psi

Submitted: 7 months ago.Category: Chevy
Show More
Show Less
Ask Your Own Chevy Question
Answered in 1 minute by:
11/28/2017
Chevy Mechanic: Roy, import/domestic specialest replied 7 months ago
Roy
Roy, import/domestic specialest
Category: Chevy
Satisfied Customers: 7,749
Experience: ASE master tech for 40 years
Verified

hello, my name is ***** ***** I will be glad to assist you. please allow me a couple of minutes to gather some basic info.

Roy

Ask Your Own Chevy Question
Chevy Mechanic: Roy, import/domestic specialest replied 7 months ago

let me get some info for you

Ask Your Own Chevy Question
Chevy Mechanic: Roy, import/domestic specialest replied 7 months ago

ok

the fuel pressure should be 60-66. you have a bad fuel pump.

the 135 is bank 1 or drivers side O2 sensor heater. common failure. replace the O2 sensor

10 is mass air flow. do not do anything with this until you replace the fuel pump. it may be related to the engine running lean.

Roy

Ask Your Own Chevy Question
Chevy Mechanic: Roy, import/domestic specialest replied 7 months ago

Please take a moment and rate my service 3 stars or better. that is the only way the site will pay me for my efforts.

Roy

Ask Your Own Chevy Question
Chevy Mechanic: Roy, import/domestic specialest replied 7 months ago

do you have a C6 transmission or an E4OD??

Roy

Ask Your Own Chevy Question
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 Roy Your Own Question
Roy
Roy
Roy, import/domestic specialest
Category: Chevy
Satisfied Customers: 7,749
7,749 Satisfied Customers
Experience: ASE master tech for 40 years

Roy 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

9,621 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
P0300 random misfire i cant figure it out. Thank u. 200,400
P0300 random misfire i cant figure it out. Thank u … read more
Jaybird61
Jaybird61
Master Automotive Mechanic
2,281 satisfied customers
I have an 08 chevy cobalt 2.2 Im running multiple codes.
I have an 08 chevy cobalt 2.2 Im running multiple codes. P0237, p0171, p0302, p013f, p2270. Put mew spark plugs new coils. Car runs rough at idle but more smooth while driving.… read more
Roy
Roy
import/domestic specialest
Associate Degree
7,749 satisfied customers
Chevrolet Tahoe 4x4: Ok...when we were in caldwell out of
Ok...when we were in caldwell out of nowhere when we would start car it would make this very loud knocking sound under passenger side. Once you drove it would go away and car idled and ran fine. Sunda… read more
Gary
Gary
Chevy Technician
Vocational, Technical or Trade Scho
9,621 satisfied customers
Chevrolet Aveo5 LS: OK, I have 5 codes, P0053, P0420, P0326,
OK, I have 5 codes, P0053, P0420, P0326, P0101, P0300 on my 2011 chevy Aveo, I have no engine poer, it will not idle higher then 4K rpm and it wont go higher the 4K rpm in any gear while driving, I ca… read more
Jerry Newton
Jerry Newton
Vocational, Technical or Trade Scho
2,066 satisfied customers
Chevy S-10: I have a 2003 Chevy S-10 4.3 4WD. Im popping a
I have a 2003 Chevy S-10 4.3 4WD. I'm popping a code p0101. I replaced my mass airflow sensor 3 times this weekend. Whats happening is my truck will not go over 40 mph and is very sluggish, no power a… read more
GM Tech (Cam)
GM Tech (Cam)
Chevy Technician
Vocational, Technical or Trade Scho
15,659 satisfied customers
2005 Chevy: 4.3L (work truck)..dtc..79k mi..throttle body..driveway
Hi need help on a 2005 Chevy Silverado 4.3L (work truck) . It came in with the following DTC's P053 , P0300 , P0430 , & P0756 it has 79K mi. on it . The customers complaint was : loss of power & poppi… read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
chevy tahoe: fuel filter..check fuel pressure an is about 45 psi
02 chevy tahoe with a ramdom misfire i replaced spark plugs mass air flow fuel filter i check fuel pressure an is about 45 psi i keep on getting a coded for a bad mass air flow and the ramdom misfire… read more
Tim&#039;s Auto Repair
Tim's Auto Repair
mechanic
High School or GED
8,884 satisfied customers
1996 Blazer: fuel pressure..V6..35 to 40 mph and engine will stall
What should the fuel pressure be for 1996 Blazer V6? Blazer looses power at 35 to 40 MPH and engine will stall to death on deacceleration. Thanks Levon G… read more
Jerry Newton
Jerry Newton
Vocational, Technical or Trade Scho
2,066 satisfied customers
2003 Tahoe: three codes showing..lean..senor..mass air flow sensor
I have three codes showing up on my 2003 Tahoe. The number 1 and 2 banks are lean and it says my mass air flow senor has a problem. I replace the mass air flow sensor but that didn't help. Should I st… read more
Jettadan1
Jettadan1
Lead mech
Some college
1,421 satisfied customers
2003 chevy: idling..rough..you have a vacuum line loose..running hot
2003 chevy silverado 5.3liter is making a chirping noise and motor is idling very rough like when you have a vacuum line loose. It is not running hot. When I rev it up in while in sitting still it chi… read more
Michael Moore
Michael Moore
Team leader, bumper to bumper tech.
Associate Degree
1,323 satisfied customers
99 blazer: p300..all the goods have been changed cap rotor wires plugs
hi have a 99 blazer 4.3 has p0300 code i just bought this vehicle and all the goods have been changed cap rotor wires plugs. this has been an ongonig problem. i just changed to the new style injectors… read more
Gary
Gary
Chevy Technician
Vocational, Technical or Trade Scho
9,621 satisfied customers
2000 Blazer: v6..New Plugs, Wires, Rotor and Cap..Ignition Coil
2000 Blazer V6 Vortec P0300 has been registering for a while now. New Plugs, Wires, Rotor and Cap as of last summer. New MAF Sensor and Ignition Coil since last week. What else could be causing the pr… read more
Gary
Gary
Chevy Technician
Vocational, Technical or Trade Scho
9,621 satisfied customers
2003 Chevy Silverado 1500HD with the 6.0L engine. getting a
2003 Chevy Silverado 1500HD with the 6.0L engine. getting a Reduced Power Mode along with DTCs P0101, P0171, P0174, P0300 P1516, P1518, P2108 and P0300 P. Engine is missing when running.… read more
Ironmike
Ironmike
ASE Master L1 performance ,Ford tech
Vocational, Technical or Trade Scho
1,773 satisfied customers
P300: 96 chev pu 4.3L code..rotor..light goes..engine runs..runs great
on 96 chev pu 4.3L code P0300 random misfire, have changed spark plugs, wires, dist cap & rotor, removed light and it comes back within 24 hrs with same P0300, from time to time the light goes off and… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
96 chevy s10: 4.3L V6 SFI p300 code came..distributor..rotor
I have a 96 chevy s10 pick-up with 4.3L V6 SFI P0300 code came up as "Random Misfire" I replaced all the plugs and wires, and the distributor and rotor button. runs better but still have the problem. … read more
jim
jim
Vocational, Technical or Trade Scho
702 satisfied customers
2000 Blazer: misfires..ive changed plugs, wires, cap..coil..throttle
2000 Blazer, 5-speed - SES light and code 0300 "multiple random misfires". I've changed plugs, wires, cap, and coil. Surges & stumbles at ~2000rpm steady speed - very little throttle. It' getting wors… read more
frank
frank
Vocational, Technical or Trade Scho
1,892 satisfied customers
1998 chevy: 4.3l v6 its giving..intake manifold..o2 sensors..egr valve
Hi all, I have a 1998 chevy c1500 with a 4.3l v6 its giving a p0300 random engine misfire code, I replaced the fuel pump, the intake manifold gaskets (leaking coolant), both O2 sensors,and cleaned the… read more
zzdaryl
zzdaryl
Lead Auto Tech
Some college and advanced training
4 satisfied customers
2003 impala code p300. change plugs and wires. but same ...
2003 impala code p300. change plugs and wires. but same problem! At about 30 mile an hour it just hang at 30 until I let the gas go and it changes gears and runs ok. and if I run it slow. it runs ok n… read more
joseph carrillo
joseph carrillo
automotive drivability tech
Vocational, Technical or Trade Scho
314 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