Idling but not revving...any ideas?

AllHailKingVolvo · Feb 22nd, 2019, 18:02

Hi all,
My Torslanda has been in my local garage for a new rear main seal and input shaft bearing since yesterday...they just called to say it's all back together and running, but it won't rev past idle and sounds like it's struggling for fuel, and asked if I was aware of any other issues with the car.

This has never happened before-its always run beautifully.

Any ideas as to what may have caused this? My first thought was crank position sensor as they had the bellhousing off and flywheel out, but it's all a bit mysterious. The garage are looking into it but I don't want to be without the car for too long so would like to be able to make a suggestion as to what to look at!

Any help would be very gratefully received.

Clifford Pope · Feb 22nd, 2019, 19:02

I can't suggest anything specific, but to get at the parts you had serviced they would have tilted the engine and dropped the gearbox, so any of the wiring harness to the engine could have been moved and perhaps a connection broken?
If the engine was tilted until it rested on the bulkhead a connection could have been crushed?

classicswede · Feb 22nd, 2019, 22:02

My money is on the flywheel fitted back in teh wrong position.

With cylinder one at tdc the missing flywheel marks need to line up with the starter opening

AllHailKingVolvo · Feb 22nd, 2019, 22:48

Thanks guys. My first thought was CPS but I think you could be onto something with the flywheel suggestion, Dai.

I'll call in the morning and mention the flywheel alignment. They've done work for me before (clutch in my 744 and rear UJ on my 245) and have been great...they're certain that they'll get to the bottom of this one but if I can make suggestions to speed the process up, all the better.

AllHailKingVolvo · Feb 23rd, 2019, 10:32

Had a chat with the garage proprietor this morning about it, really nice guy. He said he had checked fuel rail pressure and found it a little low, so suspected a restricted fuel filter. I mentioned the flywheel alignment issue and he said he was confident that it went back together the way it came apart, but would make checking the alignment the first port of call this morning.

I'll keep you posted!

nu11eaf · Feb 23rd, 2019, 13:07

Is it cutting out above idle speed or just struggling to rev. I fixed a mates car that would tick over but cut out above tickover speed but restarted every time, I found the little earth strap on the distributer plate was parting as it advanced as revs increased and plate turned, its a long shot but if flywheel is correctly lined up its worth mentioning.

AllHailKingVolvo · Feb 25th, 2019, 16:19

Collected the car from the garage today, all sorted now...turns out they were a bolt-hole out on the flywheel alignment as suggested!

Thanks again for your advice, all!

classicswede · Feb 26th, 2019, 10:56

I bet they wished they checked before chancing it

AllHailKingVolvo · Feb 27th, 2019, 21:27

Quote:

Originally Posted by classicswede

I bet they wished they checked before chancing it

Yeah, having to go back in and change it sort of knackered the profit in the job, I'd imagine.

Feb 22nd, 2019, 18:02	#1
AllHailKingVolvo Ye olde Volvii galore! Last Online: Dec 18th, 2023 11:23 Join Date: Oct 2017 Location: Sherborne	Idling but not revving...any ideas? Hi all, My Torslanda has been in my local garage for a new rear main seal and input shaft bearing since yesterday...they just called to say it's all back together and running, but it won't rev past idle and sounds like it's struggling for fuel, and asked if I was aware of any other issues with the car. This has never happened before-its always run beautifully. Any ideas as to what may have caused this? My first thought was crank position sensor as they had the bellhousing off and flywheel out, but it's all a bit mysterious. The garage are looking into it but I don't want to be without the car for too long so would like to be able to make a suggestion as to what to look at! Any help would be very gratefully received. __________________ Barges of Distinction: '96 945 SE LPT M90 '95 945 GLE D24TIC M90 ‘88 745 GL B200E M47

Feb 22nd, 2019, 22:02	#3
classicswede Trader Volvo in my veins Last Online: Yesterday 22:24 Join Date: Dec 2004 Location: Anglesey	My money is on the flywheel fitted back in teh wrong position. With cylinder one at tdc the missing flywheel marks need to line up with the starter opening __________________ http://www.classicswede.org www.classicswede.co.uk

Feb 22nd, 2019, 22:48	#4
AllHailKingVolvo Ye olde Volvii galore! Last Online: Dec 18th, 2023 11:23 Join Date: Oct 2017 Location: Sherborne	Thanks guys. My first thought was CPS but I think you could be onto something with the flywheel suggestion, Dai. I'll call in the morning and mention the flywheel alignment. They've done work for me before (clutch in my 744 and rear UJ on my 245) and have been great...they're certain that they'll get to the bottom of this one but if I can make suggestions to speed the process up, all the better. __________________ Barges of Distinction: '96 945 SE LPT M90 '95 945 GLE D24TIC M90 ‘88 745 GL B200E M47

Feb 23rd, 2019, 10:32	#5
AllHailKingVolvo Ye olde Volvii galore! Last Online: Dec 18th, 2023 11:23 Join Date: Oct 2017 Location: Sherborne	Had a chat with the garage proprietor this morning about it, really nice guy. He said he had checked fuel rail pressure and found it a little low, so suspected a restricted fuel filter. I mentioned the flywheel alignment issue and he said he was confident that it went back together the way it came apart, but would make checking the alignment the first port of call this morning. I'll keep you posted! __________________ Barges of Distinction: '96 945 SE LPT M90 '95 945 GLE D24TIC M90 ‘88 745 GL B200E M47

Feb 23rd, 2019, 13:07	#6
nu11eaf Premier Member Last Online: Yesterday 22:49 Join Date: Mar 2013 Location: Yorkshire man living in County Durham	Is it cutting out above idle speed or just struggling to rev. I fixed a mates car that would tick over but cut out above tickover speed but restarted every time, I found the little earth strap on the distributer plate was parting as it advanced as revs increased and plate turned, its a long shot but if flywheel is correctly lined up its worth mentioning. __________________ XC90 Inscription D5 Power pulse, 2017 MY, Savile grey, Blond Nappa, Leather dash/door tops, Walnut inlays, Dark tinted windows, Air suspension, Bliss/Cross traffic alert, Xenium/7 seat comfort/Family/Winter packs, 4 zone climate, Heated rear seats.

Feb 22nd, 2019, 19:02	#2
Clifford Pope Not an expert but ... Last Online: Yesterday 17:48 Join Date: Dec 2001 Location: Boncath	I can't suggest anything specific, but to get at the parts you had serviced they would have tilted the engine and dropped the gearbox, so any of the wiring harness to the engine could have been moved and perhaps a connection broken? If the engine was tilted until it rested on the bulkhead a connection could have been crushed?

Feb 25th, 2019, 16:19	#7
AllHailKingVolvo Ye olde Volvii galore! Last Online: Dec 18th, 2023 11:23 Join Date: Oct 2017 Location: Sherborne	Collected the car from the garage today, all sorted now...turns out they were a bolt-hole out on the flywheel alignment as suggested! Thanks again for your advice, all! __________________ Barges of Distinction: '96 945 SE LPT M90 '95 945 GLE D24TIC M90 ‘88 745 GL B200E M47

Feb 26th, 2019, 10:56	#8
classicswede Trader Volvo in my veins Last Online: Yesterday 22:24 Join Date: Dec 2004 Location: Anglesey	I bet they wished they checked before chancing it __________________ http://www.classicswede.org www.classicswede.co.uk

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