Audi Fuel pump question - Audi Forums
B5 Forum 1996-2001.5 Audi A4 / 2000-2002 Audi S4 & Audi RS4. (Audi A4 Forum, Audi S4 Forum, Audi RS4 Forum)

User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 01-10-2011, 09:49 AM Thread Starter
Newbie
 
Join Date: Jan 2011
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Audi Fuel pump question

My fuel pump failed last week on my audi b5 1.8 T 2000. Mechanic replaced and car ran fine. Two days later car would not accelerate and had it towed in. Mechanic said intake came off which he blamed on engine backfire. I was not driving but son said there was no backfire. I think it is something the mechanic did while fixing original problem. Is he blowing smoke up my butt?
Thanks
ewingengr is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 01-11-2011, 12:38 PM
Newbie
 
Join Date: Jan 2011
Location: Nuneaton
Posts: 14
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Sounds like the intake could have been loose. Is he suggesting the backfire blew the intake off? Or the jerks of the engine shook it off? (Too much of this sounds sounds ****ographic)

The intake being off would cause problems as the air is metered on the way in through the MAF sensor. How it came off is a mystery but it is unusual. Why would it be backfiring anyway with just a fuel pump problem?
garnetteyes is offline  
post #3 of 5 (permalink) Old 01-11-2011, 12:52 PM Thread Starter
Newbie
 
Join Date: Jan 2011
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Thanks for the reply. I was not driving it but my son said there was no backfire. I just think it is supiscous that it occured two days after they replaced the pump, but I want to be careful of accusing them of screwing up with out some facts (or opinions based on knowledge of group). I just want some other opinions.
ewingengr is offline  
post #4 of 5 (permalink) Old 01-13-2011, 04:11 AM
Premium Member
 
docurley's Avatar
 
Join Date: Sep 2006
Location: London
Posts: 1,528
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
It may not have been a back fire that caused the intake pipe to pop off loose clamp or weak or broken engine mounts could cause it but my guess if it came off at the air box the car would still run as you can unplug the MAF and the car will still run so I smell smoke.


04 Audi A4 B6 1.8TQ S-Line 190bhp 6 Speed Duel SMIC
Milltek Exhaust|VMR boost Gauge|SP51 K04-15 Outlaw (K04-23+)|Samco Sport DV|034 Sport CAT (15bhp over stock)|TT MAF| 380 inj| Autobahn88 TIP|
To be fitted: B7 RS4 F-Brakes|B5 RS4 R-Brakes|SB Stage4 Clutch|
docurley is offline  
post #5 of 5 (permalink) Old 01-15-2011, 05:16 AM
Newbie
 
Join Date: Jan 2011
Location: Nuneaton
Posts: 14
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
I think unplugging the MAF is different to it staying plugged in and the intake coming off. When it's not plugged in the ECU will default to a mode. When it's still on with no air-flow the fuelling would be wrong.

I have heard of 1.8T not accelerating when the 'o' seal on the intake is not clamped down properly. Sounds to me like the mechanic didn't refit the airbox correctly
garnetteyes is offline  
Sponsored Links
Advertisement
 
Reply

  Audi Forums > Audi Models > Audi A4, RS4 and S4 Forum > B5 Forum


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome