2003 Pontiac Montana Logo
m
mark mashburn Posted on Dec 22, 2014

What could be the problem?

When accelerating van shakes very bad,when you let off throttle it smooths out.Fluid and filter is good/full changed less than 1 yr ago.Tires have been replaced also.Would CV joints be the problem?

3 Answers

batmangs

Level 1:

An expert who has achieved level 1.

MVP:

An expert that got 5 achievements.

New Friend:

An expert that has 1 follower.

Hot-Shot:

An expert who has answered 20 questions.

  • Contributor 56 Answers
  • Posted on Dec 24, 2014
batmangs
Contributor
Level 1:

An expert who has achieved level 1.

MVP:

An expert that got 5 achievements.

New Friend:

An expert that has 1 follower.

Hot-Shot:

An expert who has answered 20 questions.

Joined: Jul 25, 2010
Answers
56
Questions
1
Helped
12865
Points
99

It was a wheel bearing on mine that caused this.

Dave Dahlberg

Level 1:

An expert who has achieved level 1.

New Friend:

An expert that has 1 follower.

  • Contributor 3 Answers
  • Posted on Dec 23, 2014
Dave Dahlberg
Contributor
Level 1:

An expert who has achieved level 1.

New Friend:

An expert that has 1 follower.

Joined: Dec 23, 2014
Answers
3
Questions
0
Helped
484
Points
3

Check your tie rods and steering rods. Alignment problem maybe. But if not, your rotors need to be machined (turned) and new brake pads.

Ad

rattle09

Level 1:

An expert who has achieved level 1.

Hot-Shot:

An expert who has answered 20 questions.

Corporal:

An expert that has over 10 points.

Mayor:

An expert whose answer got voted for 2 times.

  • Contributor 44 Answers
  • Posted on Dec 23, 2014
rattle09
Contributor
Level 1:

An expert who has achieved level 1.

Hot-Shot:

An expert who has answered 20 questions.

Corporal:

An expert that has over 10 points.

Mayor:

An expert whose answer got voted for 2 times.

Joined: Jun 06, 2009
Answers
44
Questions
0
Helped
17630
Points
77

If it's the front end that is shaking, check the ball joints, motor mounts and idler arm. Lift the front end of the van until tires are off the ground. Wiggle the front tires side to side checking for slack, use a pry bar or 2x4 to lift the wheels to check for slack. Everything should be tight. Have someone turn the steering wheel back and forth while the van is on the ground and look for loose connections in the front end. If any loose connections are found replace them. A mechanic can do a front end inspection for you for little cost if any at all. CV Joints generally do not cause any vibration when they are worn out; however, they will cause a lot of clicking noise when you turn corners once they have worn out.

5 Related Answers

Anonymous

  • 1627 Answers
  • Posted on Dec 03, 2009

SOURCE: just changed cv joint and now leaking transmission

Drive a flat screw driver through it in then it will pry out.

Ad

Anonymous

  • 1 Answer
  • Posted on Feb 03, 2009

SOURCE: @ what miles change autotransmision fluid & filter-HOW IF NEEDED?

FROM AUTOTRANS IN GLOUCESTER 30.000 MILES £125 IN PARTS RING 01452.529890

Anonymous

  • 17 Answers
  • Posted on Apr 09, 2009

SOURCE: 1994 pontiac transport se sluggish running

check the sparkplug wires on the firewall side for arching-body seam there that will cut them

Anonymous

  • 855 Answers
  • Posted on Oct 08, 2009

SOURCE: my transmission is slipping when accelerating from

The forward clutches are going bad is the most likely problem. To repair the trans should be rebuilt.

Testimonial: "That's what I was afraid of, a total rebuild. "

Anonymous

  • 10319 Answers
  • Posted on Feb 03, 2010

SOURCE: The car shakes really bad about 40-50 mph but when

you are apply torque to the engine upon pushing on the gas pedal so the law of nature states the engine mount maybe broken

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1helpful
2answers

2001 COROLLA SHAKING ABOVE 80KM'S MANUAL 1.8

Shakes ONLY under acceleration? Goes away when you back off of the throttle? Are you sure?
Please inspect the front and both side engine mounts.The half shafts will cause that sort of a shake(whole car) when they go bad(inboard CV joints).
Aggravated OR caused my a motor mount that has shifted to one side,binding the half shaft.
Common in Chrysler mini vans!!!!!!That is why the front motor mount is adjustable.
Check the engine mount on the short half side first.
0helpful
1answer

When putting van in gear the engine runs rough

how about putting the van in drive with one foot down hard on the brake and rev the engine, does it smooth out now? if it smooths out, i would pull the air cleaner tube to the throttle body and spray the throttle body with carb cleaner, be careful if using the red tube, I have had it blow off before into the intake, not good, open the accelerator and spray it out really good, it will to start until all the cleaner clears out.
0helpful
1answer

94 buick park ave runs great but with a light load it shakes, accelerates good and in park or neutral is smooth changed plugs and wires

Several possibilities having to do with the torque converter clutch and TCC solenoid:

1. Replace transmission fluid, use a synthetic Dex VI, do a complete flush with pan removal and filter replacement

2. Check all grounds related to the transmission control solenoids, clean them and ensure good electrical contact.

3. Rebuild transmission, the TCC friction material is worn out.
0helpful
1answer

1996 Chevy 5.7 1500 van will not start

Dont ever spray strting fluid in a gas engine you can ruin the rings.MAF is probably bad.
1helpful
1answer

94 Lumina Van with 3.8 liter motor. While accelerating from stop the van will drive good until hitting roughly 30 then it wont shift and you have to back off the throttle until it shifts and once it does...

Seems you may have a varnished up transmission valve body, try the conservative approach first, have the trans serviced and flushed with transmission conditioner additive installed along with new fluid...
0helpful
2answers

1994 pontiac transport se sluggish running

Ck your exhaust pipe at rear of car noting any obnoxious smell like rottrn eggs. Hold a piece of paper, I use a dollar bill ,in in front of the exhaust. If it blows the paper gently, you have a catalyctic converter going or is bad. Will need replace if so.
2helpful
2answers

My van shakes when i'm driving and its worst when i'm at the stop sign

Sounds like you need to get your rotors turned or get new ones.
Not finding what you are looking for?

260 views

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

ZJ Limited
ZJ Limited

Level 3 Expert

17989 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6988 Answers

Thomas Perkins
Thomas Perkins

Level 3 Expert

15088 Answers

Are you a Pontiac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...