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 Posted: Sat Jul 16, 2011 2:42 am |
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Joined: Jul 03, 2011
Posts: 142
Trade Rating: +1
Location: UK
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I had driven a diesel car for 2 years, but now having a petrol GTI, things seem different (obviously), but is it just me or when you come off the accelerator, the engine seems to take longer to slow down, hard to explain, but in my diesel, when you came off the gas, the engine stopped running quicker (well, not stopped, but died down, so to speak).
I'm wondering if my throttle cable is stiff or summat, the engine seems to "whirr" for too long when I put the clutch down?
Clutch is relatively new, so I dont think its that?
Any ideas?
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Posted: Sat Jul 16, 2011 2:50 am |
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Joined: Feb 07, 2010
Posts: 5120
Trade Rating: +19
Location: Raunds, Northamptonshire
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All cars act and feel different petrol Or not,
I drove an identical car to mine before.. felt and acted compleatly different
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Last edited by NorthantsBen on Sat Jul 16, 2011 2:52 am; edited 1 time in total
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Posted: Sat Jul 16, 2011 2:52 am |
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Joined: Sep 12, 2010
Posts: 1912
Trade Rating: +4
Location: Manchester
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the diesel would slow down quick due to the turbo slowing down when you take your foot off the pedal
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Posted: Sat Jul 16, 2011 2:53 am |
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Joined: Feb 07, 2010
Posts: 1810
Trade Rating: +2
Location: devon
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| Antknee wrote: |
| the diesel would slow down quick due to the turbo slowing down when you take your foot off the pedal |
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Posted: Sat Jul 16, 2011 3:15 am |
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Joined: Feb 08, 2010
Posts: 10151
Trade Rating: +12
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i though is because the higher internal friction due to the longer stroke in diesel?
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Posted: Sat Jul 16, 2011 3:19 am |
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Joined: Mar 27, 2010
Posts: 3017
Trade Rating: 0
Location: Running from Ant and Lee and Adam...........
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The simple answer to your question is it's normal. Our 406 Diesel took ages to change revs. Audi goes through them like "that".
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Posted: Sat Jul 16, 2011 3:21 am |
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Joined: Feb 07, 2010
Posts: 3085
Trade Rating: +12
Location: Essex
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A diesel engine provides better engine braking than a petrol, It is a combination of what has been suggested already.
To test your throttle cable is ok you can do a static test. Raise your revs in neutral to 4000 rpm and fully release the throttle pedal. The needle should drop back to idle within 3 seconds
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Posted: Sat Jul 16, 2011 3:32 am |
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Joined: Feb 08, 2010
Posts: 7045
Trade Rating: +5
Location: In the garage
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It also has a much higher compression ratio.
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| 2001 GTi 138, Bilstein Sprint dampers, H&R springs, 21mm Peugeot Sport torsion bars, 22mm rear ARB, Peugeot Sport Group A wishbones, 283mm discs, Goodridge stainless hoses, Maniflow 304 grade 4-2-1 2.5" manifold and system, 200 cell cat, Richard Longman head, 45mm Jenvey throttle bodies, 9.5mm TB spacers, 90mm air horns, Jenvey throttle linkage, Jenvey fuel rail, Aeromotive and Goodridge fuel fittings and braided hose, ITG sausage filter, Radtec custom radiator, Piper Ultimate Road cams, Piper vernier pulleys, Omex 600 ECU. Saxo electric PAS pump, Vibra Technics engine mounts. Samco coolant hoses, TTV steel flywheel, 4.76 final drive ratio, 307 CC 180 ratios. 2019 BMW 530i. 2017 Mercedes C300 convertible. | |
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