Go Back   EcoModder Forum > EcoModding > General Efficiency Discussion
Register Now
 Register Now

Reply  Post New Thread
Submit Tools LinkBack Thread Tools
Old 02-10-2017, 03:41 PM   #1 (permalink)
EcoModding Lurker
mikee55's Avatar
Join Date: Sep 2008
Location: England
Posts: 26
Thanks: 0
Thanked 0 Times in 0 Posts
Rattle whilst idle, controlled by lights.

Hello all, its been a long time since I visited.
Question (hope I'm in the right forum), had to use a drive-thru the other night and whilst sat there wasting my fuel, I decided to turn off my headlights and discovered I had a rattle which disappeared when I turned the lights off and came back when I turned the lights on! Its a Peugeot Partner 600D Box van. Is something underpowered? Don't remember my old van doing this, which is 6 years older, a Vauxhall Combo Box van. The Peugeot cranks a couple of times, and the engine rocks back n forth before it starts. My Combo instantly fires like a new vehicle!
Is my battery failing?


Mike, over here in England.

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

Old 02-10-2017, 07:05 PM   #2 (permalink)
Too many cars
Gasoline Fumes's Avatar
Join Date: Oct 2009
Location: New York State
Posts: 1,369

CRXFi - '88 Honda CRX XFi

Insight 256 - '00 Honda Insight
Team Honda
Gen-1 Insights

Insight 5342 - '00 Honda Insight
Team Honda
Gen-1 Insights
90 day: 65.78 mpg (US)
Thanks: 871
Thanked 639 Times in 377 Posts
Does the idle RPM drop a little with the lights on? It could just be something that vibrates at a particular RPM.

  Reply With Quote
Old 02-10-2017, 07:35 PM   #3 (permalink)
Master EcoModder
freebeard's Avatar
Join Date: Aug 2012
Location: northwest of normal
Posts: 18,023
Thanks: 4,935
Thanked 5,960 Times in 4,763 Posts
My headlights make a distinct fan noise when I turn them on. Maybe a rattly fan?
  Reply With Quote
Old 02-10-2017, 09:07 PM   #4 (permalink)
Master EcoModder
oldtamiyaphile's Avatar
Join Date: May 2009
Location: Australia
Posts: 1,507

UFI - '12 Fiat 500 Twinair
Team Turbocharged!
90 day: 40.3 mpg (US)

Jeep - '05 Jeep Wrangler Renegade
90 day: 18.09 mpg (US)

R32 - '89 Nissan Skyline

STiG - '16 Renault Trafic 140dCi Energy
90 day: 31.12 mpg (US)

Prius - '05 Toyota Prius
Team Toyota
90 day: 50.25 mpg (US)

Premodded - '49 Ford Freighter
90 day: 13.48 mpg (US)

F-117 - '10 Proton Arena GLSi
90 day: 37.82 mpg (US)

Ralica - '85 Toyota Celica ST
90 day: 25.23 mpg (US)

Sx4 - '07 Suzuki Sx4
90 day: 32.21 mpg (US)
Thanks: 322
Thanked 443 Times in 313 Posts
Just thinking out loud: faulty alternator (bearings, clutch, belt, regulator) or a faulty idle up (rpms dropping too low under load).

  Reply With Quote
Old 02-11-2017, 05:11 AM   #5 (permalink)
EcoModding Lurker
mikee55's Avatar
Join Date: Sep 2008
Location: England
Posts: 26
Thanks: 0
Thanked 0 Times in 0 Posts
The van was idling high, and drinking lots of fuel. The van belongs to my boss. I solely use it. I constantly nagged and he told me to get the mechanic out and connect to OBD11. Turns out the advance solenoid isn't working, so the engine doesn't know its warmed up! The mechanic manually lowered the RPM. A couple of you mentioned RPM, and reminded me of what he's done. Its hovering around 0deg Centigrade around these parts, so heater's on, lights, not so powerful radio. The boss wants to upgrade to an LPG in part exchange, guess I'm stuck for now? If its idling too low, battery won't charge properly?

Thanks Mike
  Reply With Quote
Old 02-11-2017, 06:21 AM   #6 (permalink)
Master EcoModder
Stubby79's Avatar
Join Date: Sep 2012
Location: Victoria, BC
Posts: 1,597

Firefly EV - '98 Pontiac Firefly EV
90 day: 107.65 mpg (US)

Little Boy Blue - '05 Toyota Echo
90 day: 33.35 mpg (US)

BlueZ - '19 Nissan 370Z Sport
90 day: 17.19 mpg (US)
Thanks: 66
Thanked 489 Times in 365 Posts
Unless its too low of an idle speed (sub 800 rpm) or it's an ancient alternator design, it should charge just fine. Modern alternators can put out almost full power at idle.

BTW, your rattle is probably due to the engine running at exactly the right (or wrong) speed and load to cause the engine to vibrate a bit, making other loose things rattle (heat shields). Could also indicate a broken engine mount. At any other RPM or load (like with the lights OFF), it won't do it.

  Reply With Quote
Reply  Post New Thread

Thread Tools

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com