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Channel: ECU, TCU, PNP, ETM & Other Modules – Matthews Volvo Site
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1999 V70 T5 PCV Intake Manifold Re Installation DIY

1999 V70 T5 PCV Intake Manifold Re Installation DIYThe late P80 cars have thermostatted PCV. Yeah! I'm convinced they clog much less than early P80s. I changed my oil with Dino every 5k with this car...

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Speed Restoring a 1998 XC70 in One Week

Speed Restoring a 1998 XC70 in One WeekMVS Contributor and #1 Volvo ABS module rebuilder Matty Moo plans to restore this XC70 in one week. Man vs. Car. The bad: steering suspension misfiring no speedo...

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Bluetooth OBDII Connect To ECU

Bluetooth OBDII Connect To ECUMVS Forums contributor ESL explains how to connect to your Volvo’s ECU via Bluetooth adaptors: Torque uses the standard OBDII emission diagnostics. If you can’t connect...

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Fuel Relay #103 — Is it Really Necessary?

Fuel Relay #103 — Is it Really Necessary? For MVS’s 1500th (!) Volvo Repair Database entry, I bring you what is probably the most technical post in the VRD: jose456891‘s Fuel Relay #103 — Is it Really...

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Which ELM 327 To Buy?

Which ELM 327 To Buy? So you want to use a phone or tablet to access your Volvo’s codes, reset procedures, and all the goodies you’re locked out of without an expensive scan tool. Since the age of...

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2000 S70 ABS Issues?

2000 S70 ABS Issues? MVS Forums member Russ B documented his ABS and STC lights scenario: Here’s the low down. I leave work tonight, driving slow around several 90 degree left & right turns. On one...

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XeMODeX is a MVS Sponsor!

XeMODeX is a MVS Sponsor! We’re proud to announce XeMODeX is partnering with this site to bring all of us information and Volvo troubleshooting solutions. XeMODeX cut its teeth developing and marketing...

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The Birth, Life & Death of an XC90 T6

The Birth, Life & Death of an XC90 T6 Ok, that title was a little dramatic, but that’s the idea. MVS member XVTer bought a 2004 XC90 T6 a few years ago for his wife. In between the buying date and...

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RWD Volvos Have PNP Switch Flashing Arrows Too

RWD Volvos Have PNP Switch Flashing Arrows Too MVS member Bob had the common flashing arrow light on the dash of his 1995 960. While looking at the wiring harness connector (8 sockets) that plugged...

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ECM Airflow Motor is Important

ECM Airflow Motor is Important MVS Contributor oragex made a video speaking about the importance of the ECU/ECM airflow motor. ECM airflow motor is important for keeping your car’s computer cooled down...

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New ETM Dead out of Box

New ETM Dead out of Box MVS Contributor precopster ran into a frustrating problem: a bad Magneti Marelli ETM… a new ETM dead out of the box. As if Volvo owners didn’t have enough trouble with 1999-2002...

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More Manual Transmission Swap Tips & Tricks

More Manual Transmission Swap Tips & Tricks MVS Contributor tryingbe goes ALL OUT doing an auto to manual transmission swap. He has outstanding information and warnings on what to buy, where to get...

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1998 vs. 1999 Changes & Differences

1998 vs. 1999 Changes & Differences Well, what are they? MVS Forums member (hey, it’s free, why not register?) j-dawg and the rest of the crew answer this important bit of Volvo trivia. This is...

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DIY ETM

DIY ETM MVS Forums member Yehuda explains how he fixed the ETM on his 2001 S60. This should be similar or identical to all P2 Volvos with the Magnetti Marelli module. ETM SOFTWARE RELOAD did work, now...

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Decrease your chances of CEM or DIM failure with a FAN

Decrease your chances of CEM or DIM failure with a FAN mrbrian200 had a goal: extend the life of and/or prevent temporary freakouts of the CEM and DIM modules in P2 Volvos. It’s a simple yet brilliant...

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Breakdown of the volvo DTC in OBDII

BREAKDOWN OF THE Volvo DTC IN OBDII This is an insightful page describing the anatomy of the Volvo DTC (Diagnostic Trouble Code) in OBDII systems. Only in car models from 1996 and on. A DTC is made up...

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Increase Volvo Performance: Chips

Volvo PERFORMANCE CHIPS OVERVIEW This information has been gathered in my quest to increase the horsepower of my 1994 Volvo 850, S70, V70 turbo wagon. I am not affiliated, nor do I know any persons...

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How To Buy A Volvo ECU

In the markey for a new Volvo ECU, see what our forum members gave to say. If by chance you do need a new Volvo ECU, then do a search on eBay for them. Just search for Volvo ECU and 850 and check the...

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How to Read Actual Miles from the ECU

Have you ever wondered How to Read Actual Miles from the ECU? Did you know that you can read the actual miles on your volvo even when the odometer is broken? Yes, it’s true. This can be done as long...

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Coolant Temp Sensor Causes Engine Stall

Coolant temp sensor troubles. The coolant temp sensor is used to measure the temperature of the engine coolant of an internal combustion engine. The readings from this sensor are then fed back to the...

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