www.tdiclub.com

Economy - Longevity - Performance
The #1 Source of TDI Information on the Web!
Forums Articles Links Meets
Orders TDI Club Cards TDIFest 2016 Gone, but not forgotten VAG-Com List Unit Conversions TDIClub Chat Thank You




Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKIV-A4 TDIs (VE and PD)

VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

Reply
 
Thread Tools
Old December 10th, 2017, 13:50   #1
Mawcus
Veteran Member
 
Join Date: Oct 2012
Location: Bellingham, WA
Fuel Economy: 41 mpg
Default Intermittent Random Hard Start Problem 2004 Jetta

2004 Jetta 5-Speed 180k miles. Ive been having random hard start problems. Really random. Seems to be no consistency as to when it will take a long time to start. Recently there have been some cold frosty mornings and it fires up right away. Takes longer to start after its warmed up and I go somewhere and try to start it again. Sometimes just a few cranks and other times 10-20 seconds of cranking. I suspect air is getting into the fuel lines but haven had a chance to install new lines. I guess it could be timing related. There really is no distinct pattern or consistency when its hard to start but very rarely does it fire up at the first bump of the key as it should. I get everything from a second or two of cranking to having it crank for 10 or more seconds and having to try 2-3 times before it fires up.

Cam is good, new stage 2 cam a few years ago. In tank lift pump has been recently replaced. New alternator, pulley and voltage regulator. Serpentine belt and tensioner is new. Battery is new.

Any info is appreciated.
__________________

Last edited by Mawcus; December 10th, 2017 at 14:01.
Mawcus is offline   Reply With Quote
Old December 10th, 2017, 14:51   #2
joep1234
Veteran Member
 
Join Date: Jan 2014
Location: NC
Default

Have you scanned it? Look at you temp sensor with the scanner. It may be out of whack. Also is your starter spinning it up to speed every time. The ECM won't start fueling until it hits 250 rpm.
__________________
'04 Beetle TDI w/BEW and DSG
joep1234 is offline   Reply With Quote
Old December 11th, 2017, 16:57   #3
Mawcus
Veteran Member
 
Join Date: Oct 2012
Location: Bellingham, WA
Fuel Economy: 41 mpg
Default

coolant temp sensor was new 2 years ago. tach works when cranking. fired up instantly this morning in sub freezing temps
__________________
Mawcus is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
2004 PD (BEW) Intermittent Hard / Slow Start (video inside) tdi_tim VW MKIV-A4 TDIs (VE and PD) 9 June 26th, 2015 07:41
help...random hard start 2006 jetta tdi cptdi VW MKV-A5 Golf/Jettas 3 March 16th, 2011 07:31
Hard start problem- 2004 VW Jetta sjohnson TDI 101 8 November 28th, 2009 08:59
Hard start problem- 2004 VW Jetta TDI sjohnson TDI 101 4 November 26th, 2009 14:20
Newbie - Intermittent Hard Start - 2004 Jetta TDI PD superrob_1 TDI 101 7 July 27th, 2009 08:19


All times are GMT -7. The time now is 02:13.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright - TDIClub Online LTD - 2017
Contact Us | Privacy Statement | Forum Rules | Disclaimer
TDIClub Online Ltd (TDIClub.com) is not affiliated with the VWoA or VWAG and is supported by contributions from viewers like you.
1996 - 2017, All Rights Reserved
Page generated in 0.11725 seconds with 11 queries
[Output: 58.08 Kb. compressed to 52.54 Kb. by saving 5.53 Kb. (9.52%)]