intermitant idle speed when first started but simmers down once warm

20

Asked by Jan 19, 2014 at 01:38 AM about the Vauxhall Vectra

Question type: Maintenance & Repair

I have just purchased a vauxhall astra and when you first start the car the idle speed slightly goes up and down between 1000 revs but simmers down once warm , is this electrical or a mechanical problem .

6 Answers

690

https://www.google.com/#q=vauxhall+astra+intake+air+temp+sensor&tbm=s hop

1 of 1 people found this helpful.
Best Answer Mark helpful
20

does this need to be replaced or just cleaned

1 of 1 people found this helpful.
690

this is like a tiny lightbulb filament...easily broken....do not attempt to clean...these are relatively cheap...just replace it~

690

it's to let the computer know how dense the air is coming into the intake plenum....if cold will make the mix rich...if warm will know that too- again like a tiny filament~

20

i went to halfords and no crc cleaner can i use electrical contact cleaner to clean the mass flow sensor

1 of 1 people found this helpful.
690

yes...perchloroethane...or trichloroethane....radio snack also sells "electronics cleaner" which is a boat-load of money for what it actually is~ more importantly will it be gettin' buggered up again right away....there is excessive crankcase fumes in the intake....perhaps the Positive Crankcase Ventilation valve is plugged or malfunctioning~

Your Answer

Looking for a Used Vectra in your area?

CarGurus has 212 nationwide Vectra listings starting at £695.

Postcode:

Vauxhall Vectra Experts

  • #1
    GeoffDavis
    Reputation
    320
  • #2
    SHANE3767
    Reputation
    290
  • #3
    Steve Gibson
    Reputation
    170
View All

Related Models For Sale

Vauxhall Astra for sale
342 Great deals out of 6,217 listings starting at £599
Vauxhall Insignia for sale
151 Great deals out of 2,613 listings starting at £1,295
Ford Focus for sale
370 Great deals out of 8,675 listings starting at £490
Ford Mondeo for sale
82 Great deals out of 1,859 listings starting at £350
Vauxhall Zafira for sale
44 Great deals out of 1,126 listings starting at £495
Vauxhall Corsa for sale
283 Great deals out of 7,178 listings starting at £700
Volkswagen Passat for sale
90 Great deals out of 1,744 listings starting at £1,190
BMW 3 Series for sale
332 Great deals out of 5,405 listings starting at £999
Audi A4 for sale
101 Great deals out of 1,698 listings starting at £999
Mercedes-Benz C-Class for sale
327 Great deals out of 5,425 listings starting at £800
Volkswagen Golf for sale
529 Great deals out of 7,652 listings starting at £650
Toyota Avensis for sale
15 Great deals out of 514 listings starting at £975
Peugeot 207 for sale
32 Great deals out of 770 listings starting at £500
BMW 5 Series for sale
139 Great deals out of 2,601 listings starting at £1,599
Ford Fiesta for sale
371 Great deals out of 9,941 listings starting at £680

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.