XC70 2.4 D5 (2007) - ECU fault?

Headhunter · Jul 30th, 2020, 17:21

Hi, I have a wonderful XC70 D5 (2007), 85k miles, but recently it has a recurring fault:
It starts with a slight misfire, then next time I start the engine it comes up with various faults on the dash (engine, antiskid etc), the auto box is stuck in 3rd gear and the misfire is worse, though the car will run (just).
I called the AA who thought it was a sticking swirl valve (apparently creating a domino effect of other fault codes).
The local Volvo specialist adjusted the swirl valve, replaced the glowplug on injector 5 and cleaned all the connectors on the ECU which cured it for about a week.
The car sat unused for a couple of months (during lockdown) then the problem reoccurred.
The local specialist recleaned the connections on the ECU and the car ran fine again for a few days before the problem happened again.
Now he says it is likely the car will need a new ECU (not cheap I believe).
Any suggestions please??

Dabb5ter · Aug 7th, 2020, 22:18

I’ve got the exact same issue. It’s intermittently misfiring it’s you know what off and gearbox limp mode & traction light

37 RUBY · Aug 7th, 2020, 23:12

This owner https://www.volvoforums.org.uk/showthread.php?t=263547 had similar and it was cured with injector wiring renewal/repair.

Might be worth a look?

Jul 30th, 2020, 17:21	#1
Headhunter New Member Last Online: Aug 4th, 2020 11:34 Join Date: Jul 2020 Location: Bristol	XC70 2.4 D5 (2007) - ECU fault? Hi, I have a wonderful XC70 D5 (2007), 85k miles, but recently it has a recurring fault: It starts with a slight misfire, then next time I start the engine it comes up with various faults on the dash (engine, antiskid etc), the auto box is stuck in 3rd gear and the misfire is worse, though the car will run (just). I called the AA who thought it was a sticking swirl valve (apparently creating a domino effect of other fault codes). The local Volvo specialist adjusted the swirl valve, replaced the glowplug on injector 5 and cleaned all the connectors on the ECU which cured it for about a week. The car sat unused for a couple of months (during lockdown) then the problem reoccurred. The local specialist recleaned the connections on the ECU and the car ran fine again for a few days before the problem happened again. Now he says it is likely the car will need a new ECU (not cheap I believe). Any suggestions please??

Aug 7th, 2020, 22:18	#2
Dabb5ter New Member Last Online: Jan 17th, 2021 00:46 Join Date: May 2020 Location: Lincoln	I’ve got the exact same issue. It’s intermittently misfiring it’s you know what off and gearbox limp mode & traction light

Aug 7th, 2020, 23:12	#3
37 RUBY Master Member Last Online: Apr 17th, 2024 16:49 Join Date: Jun 2017 Location: Chesterfield	This owner https://www.volvoforums.org.uk/showthread.php?t=263547 had similar and it was cured with injector wiring renewal/repair. Might be worth a look?

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