Why wont my car turn on?

Asked by Mar 03, 2015 at 02:23 PM about the 2001 Volkswagen Jetta GLS 1.8T

Question type: Maintenance & Repair

It cranks, but nothing. I recently replaced the alternator because the car kept on turning
off while I was driving. It had problems with the idle, but it stopped 2 weeks after I
replaced the alternator. We think it may be an air control valve.

1 Answer

8,575

i don't know why replacing the alternator would fix this issue if it was not a voltage issue. But commanly starting issues is caused by either an air flow issue, fuel or spark. Check for spark by removing hte plugs and cranking hte engine while the plug is pluged in and next to a metal surface.(best done in the dark) after this smell your cyclinders for gas before replacing the plug cause there will undoubtedly be fuel in the cyclinder from cranking it. If you can't smeel any fuel you have a fuel issue. if not move on to air. Check the MAF (mass air flow sensor) it would be a good idea to use MAF cleaner on this to clean it if you have not done so in the last year or so.

Your Answer

Add photo

Related Questions

  • car wont start 17 answers

    i have a 2001 jetta 2.0 automatic and the starter recently went out i replace it 2 weeks ago. it was running fine until yesterday and i had it replaced again. it ran once and now it isn't turning ove...

    2001 Volkswagen Jetta GL

    -

    Maintenance & Repair

  • any idea why my car wont start 2 answers

    my car was running really rough so i hooked up the carMD vehicle health system to my car and it gave me code reading P0301. so i put a new ignition coil and new spark plugs in it and it started and ra...

    2000 Volkswagen Jetta GL

    -

    Maintenance & Repair

  • 2002 jetta 1.8T wont start 3 answers

    My 2002 jetta 1.8t wont start. I dont get a crank and engine does not turn. Put a new battery in. Checked all fuses including the ones on the engine, all fuses are good. Turn the key foward and car...

    2002 Volkswagen Jetta GLS 1.8T

    -

    Maintenance & Repair

  • 2002 jetta turns over but won't start why ? 17 answers

    my 2002 vw jetta turns over but won't start what could be the problem ?

    2002 Volkswagen Jetta GLS 1.8T

    -

    Maintenance & Repair

  • why my car wont start 1 answer

    just cranks but wont turn over

    2008 Chrysler 300 C

    -

    Maintenance & Repair

Search Volkswagen Jetta Questions

Volkswagen Jetta Experts

#1 FordNut
FordNut
Reputation 2,190
#2 Goodwrench707
Goodwrench707
Reputation 2,100
#3 Deathjam4
Deathjam4
Reputation 1,460
View All

Related Models For Sale

Used Volkswagen Passat
212 Great Deals out of 20,833 listings starting at $1,800
Used Honda Civic
668 Great Deals out of 77,418 listings starting at $1,000
Used Volkswagen GTI
94 Great Deals out of 6,111 listings starting at $2,299
Used Volkswagen Golf
29 Great Deals out of 2,442 listings starting at $1,500
Used Honda Accord
812 Great Deals out of 81,611 listings starting at $899
Used BMW 3 Series
1,384 Great Deals out of 37,799 listings starting at $1,500
Used Toyota Corolla
874 Great Deals out of 74,435 listings starting at $1,500
Used Audi A4
261 Great Deals out of 11,462 listings starting at $800
Used Toyota Camry
1,096 Great Deals out of 96,274 listings starting at $1,250
Used Nissan Altima
1,079 Great Deals out of 82,567 listings starting at $670
Used Volkswagen Beetle
192 Great Deals out of 8,832 listings starting at $1,500
Used Ford Focus
696 Great Deals out of 58,725 listings starting at $995

Used Cars For Sale

2017 Volkswagen Jetta For Sale
14,261 listings starting at $12,035
2016 Volkswagen Jetta For Sale
36 Great Deals out of 1,491 listings starting at $8,999
2015 Volkswagen Jetta For Sale
73 Great Deals out of 3,413 listings starting at $8,037
2014 Volkswagen Jetta For Sale
123 Great Deals out of 3,713 listings starting at $6,499
2013 Volkswagen Jetta For Sale
81 Great Deals out of 2,021 listings starting at $5,950