Pontiac

Pontiac problems? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

2003 Pontiac grand am 3.4 has idle surge if I hold the tach…

Customer Question
2003 Pontiac grand am 3.4...
2003 Pontiac grand am 3.4 has idle surge if I hold the tach at1000 rpm then let off the throttle rpm drops to about 600 rpm then surges to 1100 rpm before returning to normal idle speed
Submitted: 2 years ago.Category: Pontiac
Show More
Show Less
Ask Your Own Pontiac Question
Answered in 7 minutes by:
2/18/2016
Pontiac Mechanic: Jeromy Madison,
 replied 2 years ago
Jeromy Madison
Category: Pontiac
Satisfied Customers: 78
Experience: Owner/Technician at Mad Auto Repair
Verified

That is usually a sign of vacuum leak somewhere.

Have you inspected all of the vacuum lines and hoses?

Could be an intake manifold gasket.

Do you have a scan tool?

Ask Your Own Pontiac Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a pontiac 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), Pontiac Technician
Category: Pontiac
Satisfied Customers: 2,403
2,403 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:

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

2,403 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

1,463 satisfied customers

15 years GM master tech/15 years ASE master

Ron Z.

Ron Z.

- Pontiac Tech -

778 satisfied customers

18+yrs experience. State Inspector and Pontiac Diagnostics

Don - Mo Lurch

Don - Mo Lurch

Pontiac Mechanic

558 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
I ide. It idles very high after getting warm, the on. It
It idles very hard after getting warm. Once I disconnect the negative battery terminal it resets and runs fine for a while … read more
roy
roy
Associate Degree
3 satisfied customers
I have a '91 Pontiac Grand Am with a 3.4 liter engine. Engine
I have a '91 Pontiac Grand Am with a 3.4 liter engine. Engine surges at Idle Runs fine all other times… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
Pontiac Grand Am GT: Hello. I have a 2003 pontiac grand am
Hello. I have a 2003 pontiac grand am gt v6 3400. In the morning when the vehicle is started it shudders really bad. If I shift to neutral from park then into drive it smooths out and runs fine. I tho… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
1996 pontiac grand am, 3.1 litre engine. erratic problems.
1996 pontiac grand am, 3.1 litre engine. erratic problems. 1. when started engine idle remained at 2000 rpm and would not idle down. check engine light on. after a couple of days the problem disappear… read more
ricardo hohl
ricardo hohl
automotive instructor
Associate Degree
1,818 satisfied customers
2003 Grand Am 2400 engine. 40,000 miles. Randomly engine
2003 Grand Am 2400 engine. 40,000 miles. Randomly engine decides to run over 1500 for idle speed. Usually 700 RPM when warm. What should I look for… read more
ricardo hohl
ricardo hohl
automotive instructor
Associate Degree
1,818 satisfied customers
Pontiac Grand Prix GT: 2006 Grand Prix Gt (Supercharged), 171,000
2006 Grand Prix Gt (Supercharged), 171,000 KM. First start was fine. Second start (10 minutes later) was difficult and the motor was surging; tachometer erratic. Applied gas and the surging intensifie… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
2007 G5 GT: fine tune..accelerating system it stays at 2500 rpm
How do I adjust the rpm on my 2007 G5 GT Pontiac? I took it for fine tune up but after cleaning the accelerating system it stays at 2500 rpm. instead of he normal 700.… read more
Gary
Gary
Pontiac Technician
Vocational, Technical or Trade Scho
1,463 satisfied customers
1994 pontiac grand prix: rpm..service engine soon light comes on
1994 pontiac grand prix. obc1 code is 35 rpm error. when 1st start car , within 3 to 5 seconds service engine soon light comes on. Rpm's go up to about 2000rpms. as soon as car reaches approx. 180 to … read more
Scott
Scott
Manager/Technician
Associate Degree
1,314 satisfied customers
2005 Pontiac Grand Am: drives..hill..take off it revs way..tach
My husband drives a 2005 Pontiac Grand Am 3.4 V6....recently started having what seems to be transmission trouble...going up hill or in hard pull at take off it revs way up on tach but car doesnt move… read more
Ted G.
Ted G.
Technical/Sales Trainer
Vocational, Technical or Trade Scho
4,376 satisfied customers
2004 Pontiac Grand Am SE: running fine..engine started to cut..stalled
I have a 2004 Pontiac Grand Am SE with the 3.4 V6 engine. It has been running fine for the 12 months that I have owned it. Today, however as I was driving, the engine started to cut out and hesitate a… read more
Dave Nova
Dave Nova
Pontiac Technician
Associate Degree
2,014 satisfied customers
3.4: town 35-40k per hour-checked cables etc no tension
2003aztec-111200k-just had head gasgets changed-3.4-idle at about 600rpm--can idle around town 35-40k per hour-checked cables etc no tension ????????? ?????????????? thanks RAE… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
pontiac grand prix gt: idling..freeway the rpm fluctuate..steady speed
I have an 04 pontiac grand prix gt. Its idling at about half of normal and when on the freeway the rpm fluctuate when going a steady speed. What could cause this?… read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
2002 pontiac grand am: v6..fuel injectors..back together..fuel rail
i have a 2002 pontiac grand am with a 3.4 v6, and over the weekend i changed the lower and upper intake gasket, changed the o-rings on the fuel injectors, after putting it all back together bleed the … read more
zzdaryl
zzdaryl
Lead Auto Tech
Some college and advanced training
4 satisfied customers
2002 pontiac grand am: v6..about 20 minutes..cranking..runs great
2002 pontiac grand am 3.4 v6 is hard to start when cold. takes about 20 minutes of cranking to get started. runs great once it is running.any sugestions?… read more
Triston
Triston
High School or GED
1,134 satisfied customers
1991 pontiac grand prix: plug wires..cylinders..coil..ignition module
I have a 1991 pontiac grand prix with a 3.4 liter v6 the engine will start and idle .u can run up the rpm's (in park) but at exactly 3000 rpm's the engine sounds like it is running up against a govern… read more
Steve7654
Steve7654
Service Manager/ Technician
4 satisfied customers
2003 Pontiac Grand Prix: revs..freeway..foot off accelerator..500 rpm
I have a 2003 Pontiac Grand Prix (3.1 liter motor) with 74,500 on the clock. -- Idle revs around 1,500 - 1,800 rpm all the time. Out on freeway with foot off accelerator the car maintains 1,500 rpm ev… read more
Rick Taylor
Rick Taylor
Repair Business Owner/Technician
HS and some Community College
42 satisfied customers
Pontiac grand am: surges..someone is pumping the gas pedal..tach
I have a pontiac grand am 1996 with a 3.1. About every tenth time while starting the engine,it surges as if someone is pumping the gas pedal. The tach will go from 400 to 3500 with the surging. Shut t… read more
GM Tech (Cam)
GM Tech (Cam)
Pontiac Technician
Vocational, Technical or Trade Scho
2,403 satisfied customers
Pontiac Grand AM: (V6..spark plugs..about 1 mph/Minute..cruise control
2003 -Pontiac Grand AM (V6 3.4) 125,000 miles. I just replaced the rear head gasket, air filter and spark plugs. Upon fixing the car, I gradualy lose about 1 MPH/Minute while on cruise control. While … read more
car tech
car tech
ASE Certified Technician
High School or GED
446 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