2000 C70 will not start

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blap
Posts: 4
Joined: Tue Jul 05, 2011 6:40 pm
Year and Model: 2000
Location: Texas

2000 C70 will not start

Postby blap » Tue Jul 05, 2011 6:52 pm

Hey everyone! I have a 2000 C70 that experienced complete engine shutdowns over the last several months. Wait a few minutes and the engine would start. Sometimes it would shutdown several times when driving for 30 minutes. Now the engine starts for a brief moment and then stops. Try again and it will not start. It has fuel to the fuel bar but not sure of pressure. Could this be a faulty fuel pump? many thanks!

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jblackburn
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Year and Model: 1998 S70 T5
Location: Alexandria, VA
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Re: 2000 C70 will not start

Postby jblackburn » Tue Jul 05, 2011 7:36 pm

Now the engine starts for a brief moment and then stops.

Does it start up for just a second and then shut down again?

The antenna ring around the ignition that reads the chip in your key is a common problem on 1999-2000 models.
'98 S70 T5
2012 Chevy Cruze LT 6MT


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

blap
Posts: 4
Joined: Tue Jul 05, 2011 6:40 pm
Year and Model: 2000
Location: Texas

Re: 2000 C70 will not start

Postby blap » Tue Jul 05, 2011 7:55 pm

Yes, it starts briefly and acts like it doesn't have fuel since I try to start again and it doesn't even try to start. Where is the ring and can it be cleaned or repaired?

normspanners
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Joined: Mon Jul 04, 2011 11:15 am
Year and Model: 2001v70xc
Location: uk

Re: 2000 C70 will not start

Postby normspanners » Tue Jul 05, 2011 10:42 pm

Cannot see it being fuel pressure, did it slow down or just stop suddenly? have a listen at open fuel filler cap in a quiet location, you should hear pump running on for a second or two after cranking,then stop quickly if the pump runs down it may be faulty, no pressure, if it is noisy it may also be faulty, has it got VVT, is engine light on, Have you had it 'READ' ON FCR ?

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jblackburn
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Joined: Sun Jun 08, 2008 9:54 pm
Year and Model: 1998 S70 T5
Location: Alexandria, VA
Flag: United States of America

2000 C70 will not start

Postby jblackburn » Wed Jul 06, 2011 12:51 am

This part is the antenna ring. Remove the clamshell around the steering wheel (via 3 Torx screws at the bottom) and unplug the ring and clean up the contacts on the plug if they are corroded up and give it a try. Sometimes this works; sometimes it doesn't.

The starting up and shutting right down suggests the immobilizer circuit cutting it out.
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'98 S70 T5
2012 Chevy Cruze LT 6MT


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

blap
Posts: 4
Joined: Tue Jul 05, 2011 6:40 pm
Year and Model: 2000
Location: Texas

Re: 2000 C70 will not start

Postby blap » Wed Jul 06, 2011 2:30 am

The ring seems clean. Any other way to check the immobilizer circuit? I did take the fuel cap off and the engine started for a longer period. It still won't run. Does anyone know what the fuel pressure should be and how to test?

normspanners
Posts: 17
Joined: Mon Jul 04, 2011 11:15 am
Year and Model: 2001v70xc
Location: uk

Re: 2000 C70 will not start

Postby normspanners » Wed Jul 06, 2011 2:51 am

you should have a schreader (tyre) valve at end of the fuel rail can't say exactly the pressure for this model but most inj systems run at around 50/60 psi but anything more than 30 psi engine should run

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jblackburn
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Posts: 13928
Joined: Sun Jun 08, 2008 9:54 pm
Year and Model: 1998 S70 T5
Location: Alexandria, VA
Flag: United States of America

2000 C70 will not start

Postby jblackburn » Wed Jul 06, 2011 2:55 am

Fuel pressure should be around 44 psi before cranking; around 38 at idle.

There is a blue cap that houses a schraeder valve on the drivers side of the fuel rail. That is where you'll test for pressure.

Remove the top of the upper fuse compartment near the windshield. There are torx screws around the edges. Remove relay 103 and stick a jumper wire between pons 15 and 78 and see if your car will start and stay running. FPR's tend to act up in extreme heat/cold, so 'tis the season!
'98 S70 T5
2012 Chevy Cruze LT 6MT


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

blap
Posts: 4
Joined: Tue Jul 05, 2011 6:40 pm
Year and Model: 2000
Location: Texas

Re: 2000 C70 will not start

Postby blap » Fri Jul 08, 2011 1:39 am

The jumper wire confirmed the relay was defective. I tried to replace the capacitors on the relay without success. However,
support from site saved me a visit to the dealership. Many thanks to all. My roughly $1000 repair turned out to be $35 and have won over a new Volvo owner and dedicated follower.


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