Replaced Bad/melted Coil, But Will Not Start

30

Asked by Aug 22, 2016 at 11:15 AM about the 2007 Volvo XC90 3.2

Question type: Maintenance & Repair

My wife was driving our 07 XC90 3.2 one day and it starts running rough
and the "check engine" light started flashing and also the display panel to
the left said, "slow down or gear up". Within seconds the car stalled and
would not start. The engine would turn over, but not start. I am no mechanic,
but I try to do as many of our car repairs as possible. To avoid an expensive
mechanic bill, we had it towed home. Going by what my wife had told me I
immediately went online and did some research and came to the conclusion
that it was most likely a bad coil. When I got a chance to take a look I could
see that the coil on the far left was obviously bad. It had a small crack on
the top and had considerable melting/deformation. One main concern was
what made it melt in the first place, but not having a code reader or
mechanic handy I thought the best thing for me to do would be to replace
the bad coil and put a new plug in that cylinder, then I could drive it
somewhere to have it looked at to see if there was another issue that
needed to be addressed. If this fixed the problem I would change the other
five plugs as well because I know it's been over 100,000 miles since they
were replaced (if ever). Anyway, I changed the plug, put in the new coil and
tried to start the engine. Much to my disappointment it is still not starting. My
assumption is that whatever made the coil melt in the first place is what is
preventing it from starting, or that maybe when the coil went bad that
somehow damaged or triggered something else. I am not sure what to do at
this point and my car knowledge is somewhat limited. I know the easiest
thing to do would be have it towed to a mechanic and have it fixed, but I
simply don't have the money for that right now, at least not for a $1000+ bill.
Any ideas or suggestions would be greatly appreciated.

4 Answers

3,045

It could be that whatever caused it to melt down, could have finally blown a fuse or fusible link. Start by checking all fuses and fusable links at the power supply boxes first, and if ALL are good, use a 12 volt tester and start tracing for power from the fuse panel to the coil connectors to see if you have power all alnong the way. If you do find any blown fuses at all, change them no matter what they are marked as to what they supply, because many cars have multiple supply source fuses and some ar marked for the main system they supply, but not the secondary one if it is a shared power circuit.

Best Answer
30

JP1956, thank you very much for your response. I took your advice and bought a tester to check the fuses and found a bad one. I replaced it and the xc90 started right up. Now that it's done it seems like a simple fix that I should have found sooner, but honestly I know I would not have found the solution without your suggestion. You saved me a ton of money!

3 out of 3 people think this is helpful.

Any idea which fuse you replaced? I checked all mine and are good, suffering from same situation now...

For anyone finding this years from now, it's fuse #10, 20a fuse under the hood, don't use a tester when fuses are installed, it'll test as good...

Your Answer

Add photo

Related Questions

  • XC90 A/C Problems 6 answers

    Last summer we noticed our A/C didn't seem to be cooling as much as it used to. We had A/C checked and were told by dealership that coolant levels were fine but battery needed replacement. Replaced ...

    2006 Volvo XC90 V8

    -

    Maintenance & Repair

  • my volvo xc90 2.5t is making a white smoke ? is it the terbo thats not ok or what can i do ? 4 answers

    an its even realizing oil at the exhous ?

    2005 Volvo XC90 2.5T AWD

    -

    Maintenance & Repair

  • Squeal Noise From Left Front Brake 24 answers

    I have a 2009 XC90. Since Dec 2012, I've been experiencing the brake squealing from the front left wheel. The dealer worked for months to identify the issue, replacing the brakes and rotors at the...

    2009 Volvo XC90

    -

    Maintenance & Repair

  • Shuttering Problem 2 answers

    I have a 08 Volvo XC 90 with a shutter starting out at low speed around 20 mph it was at The local Volvo dealership two days shy of two weeks they replaced the upper motor mount and rear drive shaft b...

    2008 Volvo XC90 3.2 AWD

    -

    Maintenance & Repair

  • 98 volvo will not turn over 20 answers

    Car has been sitting for a week will not turn over changed many things and still no spark. Need help trying to solve problem.

    1998 Volvo V70 XC Turbo AWD

    -

    Maintenance & Repair

XC90

Looking for a Used XC90 in your area?

CarGurus has 6,041 nationwide XC90 listings starting at $1,994.

ZIP:

Search Volvo XC90 Questions

Volvo XC90 Experts

#1 Tom Demyan
Tom Demyan
Reputation 140
#2 Racer_X
Racer_X
Reputation 130
#3 V4life
V4life
Reputation 100
View All

Related Models For Sale

Used Volvo XC70
52 Great Deals out of 1,141 listings starting at $1,500
Used BMW X5
428 Great Deals out of 15,270 listings starting at $2,950
Used Audi Q7
96 Great Deals out of 4,011 listings starting at $6,300
Used Acura MDX
312 Great Deals out of 17,195 listings starting at $1,200
Used Jeep Grand Cherokee
845 Great Deals out of 68,679 listings starting at $864
Used Honda Pilot
460 Great Deals out of 19,639 listings starting at $599
Used Toyota Highlander
475 Great Deals out of 25,073 listings starting at $1,500
Used Volvo S60
165 Great Deals out of 8,036 listings starting at $1,500
Used Ford Explorer
936 Great Deals out of 73,995 listings starting at $750
Used Toyota 4Runner
315 Great Deals out of 20,549 listings starting at $2,295
Used Chevrolet Tahoe
772 Great Deals out of 28,452 listings starting at $1,500
Used Mercedes-Benz GL-Class
185 Great Deals out of 4,431 listings starting at $8,800
Used Lexus RX 350
498 Great Deals out of 19,429 listings starting at $3,997
Used Volvo S80
33 Great Deals out of 1,021 listings starting at $1,250

Used Cars For Sale

2014 Volvo XC90 3.2 For Sale
13 listings starting at $22,922
2013 Volvo XC90 3.2 For Sale
46 listings starting at $8,750
2012 Volvo XC90 3.2 For Sale
9 listings starting at $15,995