Pontiac

Pontiac Problems? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Pontiac

1994 Pontiac Bonneville: stalls..braking..stop sign..car also stutters

Customer Question
I have a 1994 Pontiac...
I have a 1994 Pontiac Bonneville that frequently stalls when I am coming to a stop. Usually I am braking to prepare to stop at a traffic light or stop sign. The car also stutters, for lack of a better term, while driving. I have replaced the battery, fuel pump, cam sensor and crank sensor. I really like the way thecar drives but these problemsmake me feel like scared to death. Car stalls while moving and I have no steering or brakes. Please help. I have been to a few mechanics and spent a lot of money and still have the original problem. Thanks, Kim
Submitted: 5 years ago.Category: Pontiac
Show More
Show Less
Ask Your Own Pontiac Question
Answered in 2 minutes by:
1/29/2012
Pontiac Mechanic: Eric, Automotive Repair Shop Manager replied 5 years ago
Eric
Eric, Automotive Repair Shop Manager
Category: Pontiac
Satisfied Customers: 33,193
Experience: 20+ yrs. experience as repair shop manager and technician.
Verified
Hi,

right before it stalls when coming to a stop, do you feel a jolt, almost like someone tapped the rear of your car?
Ask Your Own Pontiac Question
Customer reply replied 5 years ago
Not that I notice. To be honest the only way that I know that it has even stalled is because I feel the steering wheel lock and no brakes. If my music is not real loud I hear ding, ding, ding.
Pontiac Mechanic: Eric, Automotive Repair Shop Manager replied 5 years ago
Hi,

Ok, last question to help me in diagnosing this - does it restart easily or do you have to wait a few minutes before it will restart
Ask Your Own Pontiac Question
Customer reply replied 5 years ago
I am actually an expert at this now. I quickly throw it into neutral andam able to restart. I oncehad a really difficult time restarting it and it took a very long time, I had to push the car of the road andeventually it started. That was however before I replaced the fuel pump. It restarts easily now.
Pontiac Mechanic: Eric, Automotive Repair Shop Manager replied 5 years ago
Hi,

Ok, there are three common problems that cause the symptoms you have: faulty ignition control module, faulty ignition coil pack or faulty Powertrain Control Module.

If you have your mechanic do the following tests below, he can narrow down and isolate the problem to one of the 3 components above without guessing or wasting your money replacing parts that are good

1. Verify good voltage and ground for the ignition module when cranking.

2. Verify that the secondary ignition resistance is OK (5k - 7k ohms for the 3 separate coils measuring tower to tower and 10k to 13k ohms tower to tower for the one big coil pack design).

3. Freeze the Powertrain Control Module (PCM) to see if the problem changes. If so, replace the PCM.
Ask Your Own Pontiac Question
Customer reply replied 5 years ago
Is there any thing else you might think the problem is or any more questions you need me to answer. I am so frustrated and definitely can't afford all the BS I have been going through besides feeling like I am going to end up dying or getting seriously hurt in this car.
Pontiac Mechanic: Eric, Automotive Repair Shop Manager replied 5 years ago
Hi,

No, those are the only 3 things that will cause this stalling out, as well as the stuttering on acceleration you feel.

If your mechanic does those 3 tests, he will be able to accruately diagnose which of the 3 is faulty and do correct repair to finally resolve this for you
Ask Your Own Pontiac Question
Pontiac Mechanic: Eric, Automotive Repair Shop Manager replied 5 years ago
Hi,

If you have any questions feel free to ask for more help, otherwise you do need to click the accept button to pay for services rendered per customer agreement as this is a paysite and expert is not paid for their time, services, or knowledge until you do so.

If you have a subscription service you still need to click the accept button but you are NOT charged again.

Thank you
Ask Your Own Pontiac Question
Customer reply replied 5 years ago
The other issue I am having is that when they replaced the fuel pump and sending unit the gas gauge now fluctuates at least a quarter to a half tank either way and I never know how much gas I have. It didn't do that before it was replaced but the one mechanic says it is normal that his gas gauge does that in his truck. Am I crazy but I think it should not move like that. What could be wrong. The oly way I have manged this now is to fill all the way up and try to refill when I have driven 150 miles. This is a pain in the ***.
Pontiac Mechanic: Eric, Automotive Repair Shop Manager replied 5 years ago
Hi,

they either bent the sending unit or didnt get the connector secure all the way. This is due to mechanic error and they need to repair this under warranty. it is NOT normal to fluctuate
Ask Your Own Pontiac Question
Customer reply replied 5 years ago
Thank you. You wouldn't happen to work anywhere near Charlotte, NC do you? I obviously need a good mechanic.
Pontiac Mechanic: Eric, Automotive Repair Shop Manager replied 5 years ago
Hi,

you are welcome.

Sorry, I am in the Black Hills of South Dakota.
Eric
Eric, Automotive Repair Shop Manager
Category: Pontiac
Satisfied Customers: 33,193
Experience: 20+ yrs. experience as repair shop manager and technician.
Verified
Eric and 87 other Pontiac Specialists are ready to help you
Ask your own question now
Customer reply replied 5 years ago
Do you have the schematic for the ignition control module? Which terminal on the ignition control module to check for the voltage. Also the mechanic is asking since the car runs and starts up easily is the problem just not more likely to be in the computer?
Pontiac Mechanic: Eric, Automotive Repair Shop Manager replied 5 years ago
Hi,

ok, give me a few minutes to upload the schematic.

although it starts and runs fine, if the ignition control module or coil pack is getting too hot, it can cause it to stall. Tell him to remove the coil pack from the ignition control module and look for whitish streaks on the control module. this would be evidence of getting too hot
Ask Your Own Pontiac Question
Customer reply replied 5 years ago
Okay. I am going to my mechanics and will check for your response then in about a half hour.
Pontiac Mechanic: Eric, Automotive Repair Shop Manager replied 5 years ago
Ask Your Own Pontiac Question
Customer reply replied 5 years ago
Dear Eric:

Tried all the things you suggested and there were no issues with any of the 3 things you thought it may be. Any other suggestions?
Pontiac Mechanic: Eric, Automotive Repair Shop Manager replied 5 years ago
Hi,

Ok, let me look at the schematics and will post back here in about an 30 minutes or so.
Ask Your Own Pontiac Question
Customer reply replied 5 years ago
ok
Pontiac Mechanic: Eric, Automotive Repair Shop Manager replied 5 years ago
Hi,

If you have it in park and while it is idling, if you step on brake pedal hard, does the idle drop to almost stalling?
Ask Your Own Pontiac Question
Customer reply replied 5 years ago
Not that I have noticed. It just really does these hard stuttering jags. It also gets in these stall moods. Has not stalled while driving since the Saturday before we started communicating. I"t does do the stuttering every day.
Pontiac Mechanic: Eric, Automotive Repair Shop Manager replied 5 years ago
Hi,

Ok, that eliminates what I was thinking.

ok, I know you replaced the fuel pump, but has pressure been checked since replaced?

If not, I think we need to check the pressure to make sure the new pump is woring properly as well as the fuel pressure regulator is good
Ask Your Own Pontiac Question
Customer reply replied 5 years ago
I am pretty sure they did this because I really argued that I did not feel the fuel pump needed to be replaced and they mentioned something about what it, could have been pressure, was before and after so I am pretty sure this is fine.
Pontiac Mechanic: Eric, Automotive Repair Shop Manager replied 5 years ago
Hi,

Ok, I hate taking this for granted, but if you are really confident that it is correct, I will assume it is.

have they hooked a scanner up to it to see what each cylinder is doing when this occurs and if the scanner registers any misfires
Ask Your Own Pontiac Question
Customer reply replied 5 years ago

I know they have hooked a scanner to it, but don't know the specifics. I think it is best to probably pick this up with you again this weekend when I can get information directly from them. Thanks for your help.

Pontiac Mechanic: Eric, Automotive Repair Shop Manager replied 5 years ago
Hi,

Ok, sounds good.

Ask Your Own Pontiac Question
Ask Eric Your Own Question
Eric
Eric
Eric, Automotive Repair Shop Manager
Category: Pontiac
Satisfied Customers: 33,193
33,193 Satisfied Customers
Experience: 20+ yrs. experience as repair shop manager and technician.

Eric 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

2,379 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

1,436 satisfied customers

15 years GM master tech/15 years ASE master

Ron Z.

Ron Z.

- Pontiac Tech -

761 satisfied customers

18+yrs experience. State Inspector and Pontiac Diagnostics

Don - Mo Lurch

Don - Mo Lurch

Pontiac Mechanic

551 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
My fan stopped. Granprix 2005. Nothing yet. The fan would
my fan stopped JA: What is the model/year of your Pontiac? Customer: granprix 2005 JA: Are you fixing your vehicle yourself? What have you tried so far? Customer: nothing yet JA: Anything else you wan… read more
Chris (aka - Moose)
Chris (aka - Moose)
Vocational, Technical or Trade Scho
108 satisfied customers
Coolant temperature gauge won't show correct heat level.
Coolant temperature gauge won't show correct heat level … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,403 satisfied customers
1998 sunfire will not turn over. Battery charged and all
1998 sunfire will not turn over. Battery charged and all accessories work feul pump working. Replaced clutch interlock switch under dash. Still not turning over. … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
I have a 2008 Pontiac G6, 131,000 miles. Uses or leaks about
I have a 2008 Pontiac G6, 131,000 miles. Uses or leaks about a quart of oil every 750-1,00 miles. Has a slight transmission fluid leak, needs new shocks and struts. Have had some things replaced over … read more
Todd M
Todd M
Owner
ASE Certification
1,486 satisfied customers
Have 2006 pontiac g6 and it's making a loud knocking sound.
Hey i have 2006 pontiac g6 and it's making a loud knocking sound … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,403 satisfied customers
This morning the driver's door on my 2009 G6 won't close. It
This morning the driver's door on my 2009 G6 won't close. It was a little sticky from cold but opened with a little tug. … read more
Lou P. master tech
Lou P. master tech
Mercedes Benz master tech
Bachelor's Degree
649 satisfied customers
When I turn the car off the parking lights the dash lights
When I turn the car off the parking lights the dash lights and the license plate light all stay on it won't turn off I had a I just put a stereo in there and I had a tail light go out the other night … read more
Mechanic01
Mechanic01
1,700 satisfied customers
It,s turning over but won,t start.It was driving fine and I
It,s turning over but won,t start.It was driving fine and I parked for about two hours when I WENT TO LEVE IT TURNS OVER FINE BUT WON,T START. … read more
tim37857
tim37857
Mechanic
High School or GED
71 satisfied customers
Ecm and injectors are not communicating with each other.
ecm and injectors are not communicating with each other. injectors replaced and 2 reman. ecm's installed and no starting. motor does turn over … read more
roy
roy
Associate Degree
3 satisfied customers
I cannot open my trunk to put the top down. My battery in my
I cannot open my trunk to put the top down. My battery in my key must be dead. I am sure there must be another way to open the trunk. Cannot find one inside the car. … read more
Todd Audette
Todd Audette
Automotive Technician
Vocational High School
138 satisfied customers
How can I check the left front door latch actuator on my
Second opinion] How can I check the left front door latch actuator on my 2008 Pontiac G6 fd sedan before I re- install it? … read more
GM Tech (Cam)
GM Tech (Cam)
Pontiac Technician
Vocational, Technical or Trade Scho
2,379 satisfied customers
How can I check the left front door latch actuator on my
How can I check the left front door latch actuator on my 2008 Pontiac G6 fd sedan before I re- install it? … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,421 satisfied customers
Low beam lights do not work but high beam does running
low beam lights do not work but high beam does running lights work … read more
Thomas Ragusa
Thomas Ragusa
Network Systems Administration
152 satisfied customers
My car is saying that there is a door ajar. This just
My done light will sometimes go off. Sometimes it will start to go off then come back on… read more
Todd M
Todd M
Owner
ASE Certification
1,486 satisfied customers
I parked the car and turned everything that I could off, but
I parked the car and turned everything that I could off, but the parking lights are still on and there doesn't seem to be anything I can do to get them to turn off. … read more
Todd Audette
Todd Audette
Automotive Technician
Vocational High School
138 satisfied customers
2007 Pontiac torrent 3.4L codes: P0404, EGR position
2007 Pontiac torrent 3.4L codes: P0404, EGR position performance P1779, torque delivered signal common cause for these codes? Vehicle has a new OEM EGR… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
I bought factory replacement speakers for a 99 Pontiac Grand
I bought factory replacement speakers for a 99 Pontiac Grand AM GT. The factory speakers had two connectors but the new speakers have one. How can I get the factory am to kick in if it's not connected… read more
Don - Mo Lurch
Don - Mo Lurch
Pontiac Mechanic
Vocational, Technical or Trade Scho
551 satisfied customers
97 firebird no power to the instrument cluster and will not
97 firebird no power to the instrument cluster and will not start. checked the battery and unhooked it. … read more
Chris (aka - Moose)
Chris (aka - Moose)
Vocational, Technical or Trade Scho
108 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