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engine miss, hard starting after timing belt change

Help, Advice, Owners' Discussion and DIY Tutorials on S40 and V40. In this forum you'll find S40/V40-specific owners asking and answering questions on maintenance, ownership, repairs, tutorials and almost every do-it-yourself thing you can do to save money owning these Volvos.

1996 - 2004 S40
1996 - 2004 V40

dleed
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dleed

engine miss, hard starting after timing belt change

Post by dleed » Wed Jul 17, 2019 8:59 am

I have a V40 LSE 155k, I am the second owner. I recently had the timing belt changed at a "reputable" independent Volvo
specialist. Prior to changing the belt I enjoyed a road trip to Las Vegas [an 800 mile round trip] in the V40 and the car performed flawlessly. I chose to change the timing belt as I was not sure when the previous owner had replaced it as I bought the car from a small used car dealer that I do business with. The carfax showed regular maintenance but not specific as to when the belt was changed. The day after the belt was changed I took the car on a 200 mile day trip and that is when I noticed stumbling on acceleration [like a coil problem] it was intermittent [I called the repair shop from the side of the road, the call went to voice mail and they never called me back!]. I drove the car home parked it. The V40 had never done that before. I drove the car a couple of times after that [short trips to store etc.] and started driving my Camry. Incidentally, the reputable Volvo repair shop still hadn't called me back-I finally called them and told them I was disappointed and they offered no explanation for anything! Now the Volvo has developed the hard starting problem [now only about 300 miles after belt change] where I have to hold the accelerator while the car warms up or it will stall, there is no check engine light. I started the car yesterday and it started normally with no problem. Could the repair shop have done something that would cause this? I just don't trust this shop now as the service went $200.00 above the estimate. There are other things that are dubious about this shop. They deny servicing this car before, but the carfax shows that they had performed a tune-up replacing coils and plugs. It also shows that the owner brought it back one day later and they had to replace 2 bad coils!!!!! A red flag for sure! I might add that one of the service writers has a crazed look like a drug addict. So much so,that it concerned me. They definately have lost my busines..



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alschnertz
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alschnertz

Re: engine miss, hard starting after timing belt change

Post by alschnertz » Fri Jul 19, 2019 6:36 pm

Maybe the shop didn't get the timing correct during the timing belt replacement.

I'd have a hard time doing it without a camshaft holding tool.


'60 PV544, '68 220, '70 145S, '86 745T, '95 854T, '01 S40
'84 Prelude
'06 MPV
'13 Ford Focus SE

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mrbrian200
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Re: engine miss, hard starting after timing belt change

Post by mrbrian200 » Fri Jul 19, 2019 10:33 pm

Don't drive it any more. From your description I suspect the tbelt is skipping a tooth every so often. Likely a problem with the tensioner. Mechanics that look obviously like drug addicts usually are- with large personal debts hanging over them- they will cut corners, overcharge, barely comprehend what they're working on, not catch or understand technical changes based on model year, substitute low quality parts (but charge you for OE/M parts), not use a torque wrench on critical parts (such as a timing belt tensioner).

If I'm not mistaken, somewhere *around or after* Y2K Volvo changed the design of the tensioner slightly. Prior to the change you turn the tensioner adjustment one way before locking it down with the bolt, after the change you turn it the other. I recall toiling with this somewhat on my own car until I looked up the correct procedure specific to my model year. Some video I watched (guy working on an older volvo) said to turn it counter clockwise or vice versa to what is the correct procedure on my '06. The tension/deflection/belt alignment simply didn't look and feel right to me until I figured out on the newer ones the design changed and this is set by turning in the opposite direction than you would on the older Volvos. This is exactly the sort of thing a drug hound isn't going to catch. If this is what they 'did' I would imagine it likely to skip a tooth once in awhile, probably when the trans shifts gears or when starting/stopping the engine. As I recall when turning the adjustment in the wrong direction about half or 2/3 way around you eventually got tension on the belt, but the alignment isn't right.



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alschnertz
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alschnertz

Re: engine miss, hard starting after timing belt change

Post by alschnertz » Sat Jul 20, 2019 6:18 pm

^
This is a pretty logical explanation.
I suspect some indie. "mechanics" don't READ a factory repair manual and only rely on YouTube.


'60 PV544, '68 220, '70 145S, '86 745T, '95 854T, '01 S40
'84 Prelude
'06 MPV
'13 Ford Focus SE

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