Problem with the timing

Asked by Jul 10, 2016 at 02:54 AM about the 1998 Volvo S40

Question type: Maintenance & Repair

Three months or so ago, the otherwise well-running engine developed a
rattling noise. Suddenly, without any apparent cause it began sounding like,
what my mechanic called, “a typewriter”. I drove with the car a little more
but decided to leave it along the road and call the mechanic on Monday. He
said I should take the car to the garage for check-up. Concerned I asked
him if I could still drive the car with that noise in front. He said yes.
After five weeks in the garage and numerous checks: fuel supply, electricity,
hydraulic valves etc. The finally diagnosed the problem to be a defective
timing belt that had skipped a few teeth and thus caused the engine to run
wrongly timed. We purchased a new timing belt, adjusted all necessary
settings and indeed the engine ran beautifully again!
For less than a week I drove the car for maybe 200 km when one day
when I started the car I heard a “clunk” or somewhat heavy knock, after
which the engine started running...... with the same “typewriter” sound
again. I left the car at home and called the mechanic and explained. They
came out and towed the car to the garage where they scratched their
heads and tinkered with the timing, “discovering” eventually that the belt-
tensioner did not work properly. After some deliberations we decided to
replace it. After another week this was accomplished and the engine ran
great again.
I used the car for just two days when the same thing happened: start, clunk
and typewriter! The mechanics came out again, towed the car again and it
is now at the garage waiting for any clever advice that may help solve this
problem.
The mechanic was trained by Volvo and has good experience and Volvo
tools, but has no clue what to do next.
Can you help? Please?
Engr. Huub J. Luyk.
Baguio City, Philippines

1 Answer

11,725

Which engine?The clunk is a clue! obviously something is being overlooked, causing the CLUNK "lock" and derailing of the timing belt... NOT, the tensioner 2-3 times? NO! Volvo tech or not I see many humans blinded by experience...I would Inspect downstream of the timing belt meaning the Transmission end! Really after ALL this I would pull the engine and go through it. Inspecting the lower end, the Head and valve train, flexplate/ flywheel..Locate the HARDWARE problem. knowing the engine design would be help "Whiteblock" or Mitsubishi? Feel free to send an airfare ticket... I would enjoy correcting this and creating a video for online review, along with viewing Baguio! Regards Ann Arbor, MI U.S.

Your Answer

Add photo

Related Questions

S40

Looking for a Used S40 in your area?

CarGurus has 1,097 nationwide S40 listings starting at $1,500.

ZIP:

Search Volvo S40 Questions

Volvo S40 Experts

#1 venom5150
venom5150
Reputation 690
#2 tenspeed
tenspeed
Reputation 350
#2 Tom Demyan
Tom Demyan
Reputation 350
View All

Related Models For Sale

Used Volvo S80
34 Great Deals out of 940 listings starting at $1,495
Used BMW 3 Series
963 Great Deals out of 33,585 listings starting at $1,000
Used Volkswagen Jetta
404 Great Deals out of 37,933 listings starting at $1,385
Used Volvo C70
14 Great Deals out of 662 listings starting at $1,894
Used Toyota Corolla
704 Great Deals out of 73,151 listings starting at $1,950
Used Toyota Camry
824 Great Deals out of 90,868 listings starting at $850
Used Honda Accord
786 Great Deals out of 88,046 listings starting at $1,150
Used Audi A4
182 Great Deals out of 10,899 listings starting at $700
Used Honda Civic
515 Great Deals out of 89,619 listings starting at $1,299
Used Volkswagen Passat
229 Great Deals out of 23,196 listings starting at $999

Used Cars For Sale

2011 Volvo S40 For Sale
36 listings starting at $5,650
2010 Volvo S40 For Sale
4 Great Deals out of 66 listings starting at $5,993
2009 Volvo S40 For Sale
79 listings starting at $3,500
2008 Volvo S40 For Sale
7 Great Deals out of 145 listings starting at $2,000
2007 Volvo S40 For Sale
7 Great Deals out of 197 listings starting at $2,400