Car

Ask a mechanic online and get answers to your car questions

Ask an Expert,
Get an Answer ASAP!

I have a 1996 Holden Rodeo 2.8l turbo diesel. Between

Customer Question
2500-3500rpm there is a harsh...
I have a 1996 Holden Rodeo 2.8l turbo diesel. Between 2500-3500rpm there is a harsh vibration mostly felt through the accelerator. It doesn't matter wether you are stationary or driving it always happens within those rpm's
Submitted: 2 years ago.Category: Car
Show More
Show Less
Ask Your Own Car Question
Answered in 1 hour by:
1/20/2016
Auto Mechanic: Gary, ASE Certified Technician replied 2 years ago
Gary
Gary, ASE Certified Technician
Category: Car
Satisfied Customers: 1,999
Experience: Senior Technician
Verified

Hi Trent,

There is a service bulletin about that very complaint.

It is to do with the accelerator cable bracket near the intercooler.

I'll see if I can find it for you and post it up here, so you can fix it yourself.

Gary

Ask Your Own Car Question
Customer reply replied 2 years ago
Thanks Gary, there is a hairline fracture in the engine mount. Do you think this be enough to cause it?
Auto Mechanic: Gary, ASE Certified Technician replied 2 years ago

If the rubber is broken, you would certainly know about it.

A hairline in the rubber wouldn't cause your concern.

Unlike Commodore, I have never replace an engine mount in Rodeo.

Now if the hairline fracture is in an engine mount bracket (steel bracket), then it would be a concern.

Gary

Ask Your Own Car Question
Customer reply replied 2 years ago
Any luck finding that old bulletin?
Auto Mechanic: Gary, ASE Certified Technician replied 2 years ago

Hi Trent,

After some more investigation, yours is early than I thought.

Yours would be a TF with a 4JB1 engine, where what I was thinking is RA with 4JJ1 engine.

If you can reproduce the vibration in neutral, then a two person analysis may find your concern.

At that age, it would be possible the engine mounts have lost their compliance and are starting to act as solid.

I would also see if the vibration is still there with the clutch depressed and in gear, that way the clutch plate and all the gearbox internals are isolated from the engine.

If you do engine mount rubbers and the bracket, make sure everything finds a an equilibrium when doing everything up, including inspecting the transmission mount.

I would also check the exhaust system for and impact damage, that may put stress on the engine/trans mounts.

I hope this may provide some help to you.

Regards

Gary

Ask Your Own Car Question
Customer reply replied 2 years ago
Hi Gary, still does it with clutch in and in gear. No exhaust damage. Front left hand side mount definitely needs replacing so will do that. Going to get my mechanic to rip the gearbox out and go from there I think...
Auto Mechanic: Gary, ASE Certified Technician replied 2 years ago

Ok Trent, I'll hear from you in a little while.

Gary

Ask Your Own Car Question
Customer reply replied 2 years ago
Hi Gary, the gearbox is out and it is still vibrating. I guess this eliminates quite a bit but still no answers. The timing was way out when the mechanic got it. He fixed this so it is idling well. He is thinking maybe it has something to do with the fuel pump? The car yard I bought it from told me they replaced the fuel pump but it looks like they put a used one in? Any ideas?
Trent.
Auto Mechanic: Gary, ASE Certified Technician replied 2 years ago

Hi Trent,

If it needed a fuel pump, they would be scarce now, so a wreckers pump may have been the only choice.

Where is the vacuum pump for the brakes?

It is on the back of thee alternator? Or in the timing case area with the fuel pump?

Has the clutch and flywheel been off?

Gary

Ask Your Own Car Question
Customer reply replied 2 years ago
Mechanic is convinced it's the fuel pump as the timing was so far out. So he is going to pull it out and rebuild it. Fingers crossed!
Customer reply replied 2 years ago
Ok, so the fuel pump needs a total recondition and by the looks of the rust has had some fuel contamination at some stage.
Still no 100% guarantee it will fix the vibration though! Just got a list and quote from the mechanic for about $2,000 for:VE pump labour
Remove and replace injection pump
Service injectors
Head and rotor
Drive Shaft
Cam PLate
Feed Pump
Pressure Regulating Valve Head & Rotor
Delivery Valves
Head Plug
Roller Kit
Overhaul Kit
Drive Shaft Seal WorkshopHoping insurance will cover some and the lying mongrels from the car yard will pay for the rest as they told me the pump was done. Mechanic sent me photos to the contrary.
Feeling a bit frustrated,
Trent.
Auto Mechanic: Gary, ASE Certified Technician replied 2 years ago

A few of those parts look like have come from a motor that has been sitting in the rain for the past 6 months. I'd say the pump came from a wrecker, and some very sloppy assembly work afterwards.

I think your mechanic is right, and no doubt the injectors flow differently and/or the pump volumes are also different.

If this does fix your problem, stand by your guns against the car yard.

Do you have a video/audio of the vibration?

Gary

Ask Your Own Car Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with an auto mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Chris (aka-Moose) Your Own Question
Chris (aka-Moose)
Chris (aka-Moose)
Chris (aka-Moose), Technician
Category: Car
Satisfied Customers: 1,330
1,330 Satisfied Customers
Experience: 16 years of experience

Chris (aka-Moose) 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 would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

Excellent reply, and also very quick. Really sounds like the Expert knows what he is talking about. I will be back to use your service when I need more help with my RV.

DutchUSA

< Previous | Next >

Meet the Experts:

Chris (aka-Moose)

Chris (aka-Moose)

Technician

1,330 satisfied customers

16 years of experience

Ted G.

Ted G.

ASE Certified Technician

1,754 satisfied customers

20 years auto repair experience, ASE Master Tech, Mechanical Failure consultant, Expert Witness

George H.

George H.

ASE Certified Technician

1,564 satisfied customers

ASE Master Tech 15+ yrs, AAS Automotive Technology, Factory trained Asian specialist

GM Tech (Cam)

GM Tech (Cam)

Auto Service Tech

680 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Amedee

Amedee

Former ASE Master Tech

2,562 satisfied customers

ASE certified tech advanced level specialist. Wisconsin certified emissions state inspector

Jerry

Jerry

Master Mechanic

2,181 satisfied customers

ASE master, 30+ years. All makes and models. Trouble shooter, shop forman, service manager

Richard

Richard

ASE Certified Technician

1,009 satisfied customers

12 years Ford Lincoln/Mercury Jaguar dealership as a technician and shop foreman reparing all makes

< Previous | Next >

Related Car Questions
My Toyota Quantum jerks while accelerating. I changed fuel
Hello, my Toyota Quantum jerks while accelerating. I changed fuel filter and today had the engine done bt after 40km running it starts jerking again … read more
Peter Bagley
Peter Bagley
master technition
Vocational, Technical or Trade School
1,321 satisfied customers
Have a 1999 VW Caravelle. In Aug this year noticed the n/s/f
Have a 1999 VW Caravelle. In Aug this year noticed the n/s/f tyre was were uneven combined with low rev acceleration. Tyre was found to be very out of shape, not seen by the tyre co. before. Tyre repl… read more
gomi_otaku
gomi_otaku
Auto Technician (dealership)
Vocational, Technical or Trade Scho
2,229 satisfied customers
Got a wj. put it into drive ,it takes up fine but as you
got a wj . put it into drive ,it takes up fine but as you start to move you feel a bump in the driveline as it moves asif taking up slack . This occurs as you put your foot on the gas . Also transmiss… read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
Ford sierra 2.0clx sierra: when I drive uphill and press the
when I drive uphill and press the accelerator the engine reves up and the car has no forward power then eventually catches and moves forward… read more
sean
sean
Ford Master Technician
Vocational, Technical or Trade Scho
1,348 satisfied customers
Volkswagen Touareg TDI: , I'm currently looking at purchasing
Hi, I'm currently looking at purchasing a Touareg that is advertised to need a new stepper motor. My concern is that it has been driven around for a while without the stepper motor and im wondering if… read more
gomi_otaku
gomi_otaku
Auto Technician (dealership)
Vocational, Technical or Trade Scho
2,229 satisfied customers
Toyota HDJ79R: I have a 79 series toyota genuine turbo diesel
I have a 79 series toyota genuine turbo diesel it has a humming noise that seems to be in fire wall fuel lines area of the vehicle between 1000rpm to 2000rpm more so on the deacceleration the noise is… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Audi A6 Quattro: Hi, I have a 2005 Audi A6 3.0 Quattro Auto.
Hi, I have a 2005 Audi A6 3.0 Quattro Auto. I'm getting a really bad judder / vibration when going thorugh 1500 - 2500 rpm, it doesn't do it when cold it's when it reaches temperature. I have to keep … read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
bmw: Range Rover..harshness and vibration..pedals and steering wheel
I have a 2004 Range Rover auto HSE (BMW 4.4) in Eastern Europe. There is a harshness and vibration felt through the pedals and steering wheel when the engine is around 2,000 - 2500rpm on a light load.… read more
Steve Porter
Steve Porter
I have a vauxhall zafira 1.7 eco flex, its on a 60 plate..noises
Hi , i have a vauxhall zafira 1.7 eco flex, it's on a 60 plate. It seems to be developing afew strange noises that the garage say I have to live with! The first one is like an intermitant spinning noi… read more
vauxdoc
vauxdoc
Vocational, Technical or Trade Scho
2008 Mazda CX-9 Grand Touring: vibration..gas pedal..steering wheel
I have a 2008 Mazda CX-9 Grand Touring. There is vibration in the gas pedal and to a lessor degree in the steering wheel, between 2000 and 2500 RPMs. I do not have the vibration at any other RPM. The … read more
Tim West
Tim West
Service Manager
Computer/ Automotive certifications
16 satisfied customers
My 2003 Saab 9-3 has started to Shake when I accelerate and
My 2003 Saab 9-3 has started to Shake when I accelerate and my Turbo gets to a certain level. It most often happens between 50 and 60 mph and has most recently began from 30 - 40 mph. Along with that … read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
i have a 2005 porsche cayenne turbo with 33000miles. when i
i have a 2005 porsche cayenne turbo with 33000miles. when i lightly accelerate but load the drivetrain at low rpm(meaning raising boost above .4 bar, but not jumping gears) in 4,5, or 6th gear with en… read more
David
David
Shop Foreman / Lead Technician
ASE Master and L1+ VW Master Techni
2,315 satisfied customers
Honda accord: a new flywheel and clutch..drivers side..vibrates
My 2.2 diesel Honda accord is vibrating between 80 and 100 kph. It has had a new flywheel and clutch and also a new drivers side drive, yet still vibrates.… read more
Eddie
Eddie
High School or GED
10 satisfied customers
2002 Saab: Convertible..some torque on the engine it..jerky..alignment
I have a 2002 Saab 9-3 Convertible. When I put some torque on the engine it is a little jerky. At first I thought it was an alignment problem it is not. There is no jerky feeling there is no load on t… read more
Elated Technician
Elated Technician
Service Technician
Associates in Automotive and Diesel
214 satisfied customers
My 98 sily K1500 4WD 5.7 has 130,000 miles..vibration..accelerate
My 98 Sily K1500 4WD 5.7 has 130,000 miles and still runs like new. I am very fastidious about maintenance and repair. The truck recently developed a noticeable vibration/shudder that only occurs whil… read more
Ted G.
Ted G.
ASE Certified Technician
Vocational, Technical or Trade Scho
1,754 satisfied customers
2007 Audi: left turn..hesitates..I accelerate the car..2nd gear
I have a 2007 Audi 3.2L A6.. When I make a left turn from stationary, the car hesitates big time as if it is running out of gas. Also, when I accelerate the car will hang in 2nd gear too long. The dea… read more
RIP
RIP
Lead Technician/ JA Car Category Mentor
High School or GED
452 satisfied customers
1996 Isuzu Rodeo: driving my..engine reved up and the rpm..accelerate
I was driving my 1996 Isuzu Rodeo. When I went to press the gas the engine reved up and the rpm's went up, but the car did not accelerate. It continued to do this until I could get home. The Check Tra… read more
Chris (aka-Moose)
Chris (aka-Moose)
Technician
Vocational, Technical or Trade School
1,330 satisfied customers
2003 dodge ram 3500: 4wd 5.9L cummings..engine not the tires
i have a 2003 dodge ram 3500 4wd 5.9L cummings. the truck has a severe vibration in the stering wheel. the vibration is coming from the engine not the tires as best that i can tell.vibration changes w… read more
Brian
Brian
Automotive Service Consultant/Technician
Bachelor Degree
780 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