How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask vauxdoc Your Own Question

vauxdoc
vauxdoc, Other
Category: Vauxhall
Satisfied Customers: 1192
Experience:  Vauxhall diagnostic technician
10908802
Type Your Vauxhall Question Here...
vauxdoc is online now

Vauxhall astra 1.6 55 plate sxi twinport petrol, I have been

Resolved Question:

Vauxhall astra 1.6 55 plate sxi twinport petrol, I have been having problems starting the car first thing in the morning when car has been left standing overnight, car will crank but will not fire. at first would take a few attempts and would start but now it is not starting just cranking over, the other week I was able to bump start it and it fired up but today I went to bumpstart it and it didn't catch, don't know if that was because I didn't have much power because previously was getting a push off my drive but today car was just parked on road.
once started in the morning, car will start throughout the day, its when its been left standing for 7/8hours+, car hasn't started today just cranking over,
fuel pump has been changed when problem first occurred but never solved it, all wiring has been checked from fuel pump, ignition checked, battery is fine, has had full service history, on last service in sept when it went to Vauxhall it had the full service and fuel washout, before it would take a few attempts but it has got worse and now just isn't firing. please help very frustrated now! as garage sent ecu off thinking it was that and it came back not faulty, once it has been started first ting in morning by whichever means it will start the rest of the day
Submitted: 3 years ago.
Category: Vauxhall
Expert:  vauxdoc replied 3 years ago.
Welcome to Just answer, With a fault like this I would do a cold start test with 2 pieces of equipment attatched, a fuel pressure gauge which would test not only the pump but the relay and ECU wiring, next a diagnostic scanner that would look at the RPM while cranking on the starter to test the crankshaft speed sensor.

The crankshaft sensor is the most likely cause and I would suggest that you have this replaced .

I hope this helps best regards, Vauxdoc.
Customer: replied 3 years ago.


is crankshaft sensor the same as camshaft sensor or are they 2 different parts?


 

Expert:  vauxdoc replied 3 years ago.
No the Crankshaft and camshaft sensors are different, thay are available on Ebay at around £20 CLICK HERE
Customer: replied 3 years ago.


but its weird that once car has been started (usually by jumpstart) it will start perfect throughout the rest of day, until it has been left standing overnight. if was intermittent faulty crankshaft sensor it wouldn't happen at the same time everyday would it?


could there be a blockage in fuel pipe which is causing this?

Expert:  vauxdoc replied 3 years ago.

I'm just going on my own experience as I have changed dozens of these for similar faults, never had a fuel blockage though.

vauxdoc, Other
Category: Vauxhall
Satisfied Customers: 1192
Experience: Vauxhall diagnostic technician
vauxdoc and other Vauxhall Specialists are ready to help you

What Customers are Saying:

 
 
 
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil
< Previous | Next >
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil
  • Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible. Charles
  • As a single woman, I really appreciate an excellent and affordable opinion.
    Thank you Geordie, I will not hesitate to contact justanswer in the future!
    Sue
  • Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff. Jim
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex
 
 
 

Meet The Experts:

 
 
 
  • Robert

    Robert

    Vauxhall Technician

    Satisfied Customers:

    145
    Fully qualified 19+yrs exp/self employed technician in the UK
< Previous | Next >
  • http://ww2.justanswer.com/uploads/FO/fordtwo/2014-12-19_163422_arrepair.64x64.jpg Robert's Avatar

    Robert

    Vauxhall Technician

    Satisfied Customers:

    145
    Fully qualified 19+yrs exp/self employed technician in the UK
  • http://ww2.justanswer.com/uploads/IN/indytech/2013-8-8_102717_SantoDomingo146598x6402.64x64.jpg Greg's Avatar

    Greg

    Technician

    Satisfied Customers:

    1081
    Automotive diagnostic tech
  • http://ww2.justanswer.com/uploads/35/350matt/2012-6-7_182356_matsavatr.64x64.jpg Matt's Avatar

    Matt

    Mechanical Engineer

    Satisfied Customers:

    4477
    BEng hons Mech engineering, in auto industry 22 years
  • http://ww2.justanswer.com/uploads/TE/techmachine/0601821347169_717372168_8940977_39623330_o.64x64.jpg Ross's Avatar

    Ross

    Diagnostic and repair technician

    Satisfied Customers:

    453
    Licensed diagnostic and repair technician
  • http://ww2.justanswer.com/uploads/RO/RobMechanic/068.64x64.JPG Rob's Avatar

    Rob

    ASE Certified Technician

    Satisfied Customers:

    82
    30 years trade experience
  • http://ww2.justanswer.com/uploads/UK/ukiaibal/2012-11-9_205920_SAM0109.64x64.JPG uk_iaibal's Avatar

    uk_iaibal

    UK Car Mechanic

    Satisfied Customers:

    1
    Verified Car Mechanic.