Quote:
Originally Posted by Steve001
Hi, I'm a bit of a novice but I recently bought an 09 Volvo v50, 2l diesel. I constantly had a jerking motion when accelerating. The dealer struggled to find the problem. I had a power system fail and put in a new battery and alternator. The jerking continued so I brought it back to the dealer who told me they fixed the EGR. The jerking returned and the engine system service light came so I brought it to s Volvo specialist. They found that the EGR had been blocked with a blanking plate and the vacuum hose to the throttle had been blocked with a bung.
The garage replaced the EGR and the car failed to start. They thought the prob was the flap in the throttle. They sanded the flap down and the car now starts... But is a bit touch and go. The jerking is back as bad as ever.
Any ideas what the problem is. If I replaced the throttle would that solve the start/jerking problem? I'm at my wits end with this car!!
|
Can you get your money back ??
Did the Volvo specialist check to see if there were any hidden fault codes logged by the ECU, or were they guessing at what was wrong ??
Blanking the EGR results in a longer warm up interval and tends to contaminate the CAT and DPF. It's also more likely that the injectors will gum up if you are not using a major brand (Shell or BP/Aral) top of the range fuel. More of an issue in winter.
Pity you did not get some Pic's of the blanked EGR and pipe, as it's a criminal act in the EU. For some silly reason it's not an MOT failure point yet. If the EGR is blanked the DPF has often been gutted and that sure is an MOT failure point.
Both Mod's partially invalidate the insurance if you were responsible, which you were not. The EGR one in particular tends to indicate the previous owner or garage was a muppet.
Don't replace the intake control or e-throttle unit until you get the codes read, it might be a clutch or injection system fault. I'm sure the previous owner knows what is wrong!
If you have to keep the car, change the oil & filters and when you empty the fuel filter bowl to fit a new Bosch or Gen Volvo fuel filter (Plus the 2 O rings), fill it with a direct feed injection system cleaner. Liqui Moly Diesel Purge or the Halfrauds copy (Might be Wynns) are both good.
A new intake shut off unit (O ring required) is not expensive from a Ford dealer, but the e-throttle, CAT or DPF in particular sure are. It might be possible to clean the DPF if a forced Regen does not work.
More info on jerky Ford 2.0 TD:
http://www.talkford.com/community/to...-of-top-speed/
It does suggest a potential MAF sensor fault and about half of those can be cleaned up with a spray can from Halfrauds (MAF intake or sensor cleaner), or top quality contact cleaner.