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XC90 '02–'15 General Forum for the P2-platform XC90 model |
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Loose wire, rough idle, and brake failure message.Views : 406 Replies : 9Users Viewing This Thread : |
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May 26th, 2019, 05:48 | #1 |
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Loose wire, rough idle, and brake failure message.
Thanks in advance for any help.
I've got a 2007 XC90 V8 (made for the Australasian market) which I recently replaced the plugs in (OEM from reputable retailer). On testing the car after replacing the plugs it ran like a dog and smelt a bit fumier than normal. Took all the plugs out again and checked all the gaps (on advice from mechanic adjusted them from .044ish to .040 - they'd been damaged in transport so none of the gaps were pregapped). Still ran rough so went through and started checking the coils. One of them wasn't working at all and found that a wire had come loose (as per attached picture.). Does anyone know how to open up these connectors so I can get the wire back in properly? (you can see it's the blue wire that has been disconnected) The other issue (which may not be an issue once this is fixed) is that while going through and testing the coils I started getting an error message for brake failure. Any ideas on what that might be related to? |
May 26th, 2019, 07:17 | #2 |
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Last Online: Apr 25th, 2024 19:48
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Location: 2007 Volvo XC90 D5 Geartronic. South of Hadrians Wall.
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Try putting the original plugs back in to see if it runs correctly again,just in case the reputable dealer has been supplied with counterfeit items
loads of fake plugs around now especially NGK.
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May 26th, 2019, 07:34 | #3 |
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Maybe I didn't explain that very well.
Testing the coils involved putting an original plug back in. On one of the coils (pictured) it didn't fire the plug at all...after a bit discovered that one of the wires had come loose/out. New plug or old it won't matter as that coil won't go with out the wire back in place. I suspect it might have been loose and when I took the plugs out the first time it came out (and I didn't notice) thus one cylinder isn't firing. |
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May 26th, 2019, 08:58 | #4 |
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The connector housing can be removed normally quite easily. Look for locking tabs holding the body together.
Once the housing is off, the pins can be removed from the connector body. Sometimes this requires special pin removal tools, if you cannot get the pin out without damaging it, then visit your local auto electrician Once the pin is out the wire can be recrimped or soldered to the pin.
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XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65. |
May 26th, 2019, 10:06 | #5 | |
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Quote:
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May 26th, 2019, 10:17 | #6 |
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First, clean the dirt off with a toothbrush, then you can see it better
Generally, the orange piece you see is a locking slider, that needs to slide out one way or another. All these connectors clip together, which means they all unclip. You just have to find the clip.
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XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65. |
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