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


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

  • Why won't my key turn past the accessory mark in my 09 jetta 8 answers

    My key goes in, will turn to accessory, but no further - it was getting hard to turn but now it will not turn at all

    2009 Volkswagen Jetta SE


    Maintenance & Repair

  • Jetta turns over but wont start 2 answers

    I have a 96 Jetta. It turns over but wont start. I changed alternator and stater. Don't know what is wrong with it i thought my alarm systems kill switch had something to do to it but i found out my...

    1996 Volkswagen Jetta 4 Dr GLS Sedan


    Maintenance & Repair

Search Volkswagen Jetta Questions

Volkswagen Jetta Experts

#1 FordNut
Reputation 2,110
#2 Goodwrench707
Reputation 1,880
#3 Tom Demyan
Tom Demyan
Reputation 1,270
View All

Related Models For Sale

Used Volkswagen Passat"
269 Great Deals out of 22,423 listings starting at $1,299
Used Honda Civic"
1,148 Great Deals out of 59,092 listings starting at $995
Used Volkswagen GTI"
119 Great Deals out of 6,235 listings starting at $2,900
Used Volkswagen Golf"
37 Great Deals out of 2,708 listings starting at $1,995
Used Honda Accord"
1,263 Great Deals out of 78,694 listings starting at $1,400
Used Toyota Corolla"
1,417 Great Deals out of 67,100 listings starting at $1,295
Used BMW 3 Series"
1,615 Great Deals out of 39,618 listings starting at $888
Used Toyota Camry"
1,608 Great Deals out of 98,371 listings starting at $895
Used Audi A4"
314 Great Deals out of 13,019 listings starting at $1,500
Used Nissan Altima"
1,360 Great Deals out of 87,464 listings starting at $1,095
Used Volkswagen Beetle"
239 Great Deals out of 9,132 listings starting at $999
Used Ford Focus"
1,244 Great Deals out of 56,705 listings starting at $1,495

Used Cars For Sale

2017 Volkswagen Jetta For Sale
12,828 listings starting at $13,012
2016 Volkswagen Jetta For Sale
22 Great Deals out of 2,323 listings starting at $10,999
2015 Volkswagen Jetta For Sale
98 Great Deals out of 3,730 listings starting at $8,037
2014 Volkswagen Jetta For Sale
126 Great Deals out of 2,617 listings starting at $5,977
2013 Volkswagen Jetta For Sale
210 Great Deals out of 3,774 listings starting at $3,000