Question about 1986 Volvo 740

1 Answer

When i"m driving my volvo

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 437 Answers

Is the knocking a regular rhythm that is proportional to the speed of the car? Driveshaft center bearings generally drive you crazy with buzzing and grinding before they get to the point of knocking, but I suppose that is possible. Drive shaft and rear end bearings would not make noise as you start the car, however.
Is the knocking related to road surface or braking, and is it directly below your feet? If so, it is the control arm bushing. That part is bolted to the bottom of the car directly beneath your feet and it will knock when the rubber part fails and crumbles out. This is common on a car this old, but this part also would not knock as you start the car.
A knock when you start the car is more likely the exhaust pipe hitting the bottom of the car. This can happen if a bolt is missing from a hangar, or the pipe is bent, or an engine mount is broken. The engine mount on the passenger side is the easier one to see from the top, and is usually the one that breaks first, as I recall. I always suggest that engine mount replacement be left to professionals. That job is a good way to loose a finger.
Be sure and check the bolt in the bracket right at the rear of the engine. For some reason, this one works loose and the bolt falls out. You have to crawl under the car to see if that bolt has fallen out.
Another suspect is the transmission mount. Does the shifter move as you step on the gas and let off the gas?

Posted on Mar 26, 2011

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Red check Gage light on oil gage went all the way down.oil is full made a light nocking noise.still runs but makeing nocking noise.


Knocking noise is not a good sign. Could be the oil flow has been disrupted. Continued driving could damage the engine. Take it in for service immediately.

...

Apr 24, 2016 | Cars & Trucks

1 Answer

What is the nocking noise when heater/airconditioner is on and it goes away in about 30 seconds>


Could be the blower motor is worn out (wobbles at start up). I have also found sticks, pennies and other trash lay on top of the fan that would make noises. The blower is on the passenger side under the cover.

Aug 16, 2014 | 2006 Chevrolet Impala

1 Answer

What could it be when i excellurated i heard a loud noise an oil started leaking under the van and smoking making loud nocking noise


Sounds like big end bearing gone and oil would probably be coming from gear box and engine seam and falling on exhaust its sounds like a pretty stuffed motor but everything is fixable depending on how much coin it coast and if its worth it cya Neil

Jul 18, 2014 | 2002 Ford Windstar Cargo

1 Answer

Changed transmission fluid and filter on 2001 mustang now it will not move while it is in Drive


Well..., then just sit in the driver's seat and make noises like as if you're really driving it (ha,ha)sorry,just needed to put a smile on your face. Anyways,when/IF transmission converter is emptied,it needs to refill fully as it makes mechanisms(valves,so on)work to make the car move;now that is IF it was drained from also there. If you drained the fluid from the transmission pan(drain plug),changed the filter PROPERLY INSTALLED,refilled 2 thirds while engine off then running safely in PARK (parking brake on)fill to recommended amount checking with dipstick ,while in the car with brake pedal on,put in drive-neutral-reverse to make transmission's mechanisms make operation until car starts making a movement, then it should be okay. Are you sure you didn't nock something out of place,like linkage for gear changes??. Does the car make any noises when shifting gears??make a clunk noise??does it try to move??;need to know more details for someone to understand and find problem.

Jan 01, 2014 | 2001 Ford Mustang

1 Answer

My '06 Honda Odyssey has gotten noisy recently.


If it is filled up to the "full hot" mark then you are okay, fluid wise. It almost sounds like once it gets warmed up, it starts running better. The "growling" noise (especially when turning) could be from it not getting enough fluid. Other than that, your power steering pump maybe on its last legs, and it is taking time to warm up before it starts pumping fluid correctly. Just make sure that you power steering resevoir is completely filled to the proper mark.

Aug 10, 2013 | Cars & Trucks

1 Answer

Loud humming noise from right front end of 99 blazer


the noise is coming from the wheel section, it's called air splash, humming varies with speed, main causes are wheel alignment due to loose ball joint, check if your tire erodes on one side, next check your disc brake for clogged air cooled vain and disc wearing

Feb 23, 2012 | 1999 Chevrolet Blazer

1 Answer

Nocking noise coused from suger in tank


Try changing your spark pluges and running lucus fuel injuector cleaner in every fill up.

Mar 23, 2009 | 1999 GMC Jimmy

1 Answer

Keeps cutting off after 30 miles


WE HAD THE SAME PROBLEM BUT NOT FOR LONG SO ITS BEEN WORKING FOR US AND HOPEFULLY THIS WILL WORK FOR YOU. WE'VE RECENTLY LEARNED BY JUST STARTING YOUR CAR THE CORRECT WAY IT HASN'T BEEN HAPPENING TO US ANYMORE AND THATS BY: WHEN YOU START YOUR CAR YOU ARE SUPPOSE TO HAVE YOUR FOOT ON THE BRAKES PUSHING LIGHTLY DOWN, THAT IS THE CORRECT WAY TO START A 1989 740 SERIES VOLVO QUOTED STRAIT FROM THE ORIGINAL MANUAL ON HOW TO OPERATE THE CAR. GOOD LUCK

Nov 06, 2008 | 1989 Volvo 740

Not finding what you are looking for?
Cars & Trucks Logo

189 people viewed this question

Ask a Question

Usually answered in minutes!

Top Volvo Experts

yadayada
yadayada

Level 3 Expert

75797 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8140 Answers

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

Answer questions

Manuals & User Guides

Loading...