Go Back  AudiForums.com > Audi Tech > Computer & Fuel Systems
98 a4 1.8t fuel and power problem.  HELP Please >

98 a4 1.8t fuel and power problem. HELP Please

Computer & Fuel Systems Talk about the computer, fuel systems and delivery, customization and more.

98 a4 1.8t fuel and power problem. HELP Please

  #1  
Old 09-17-2014, 07:12 AM
1st Gear
Thread Starter
Join Date: Sep 2014
Posts: 3
Default 98 a4 1.8t fuel and power problem. HELP Please

i have a 98 audi a4 quattro 1.8t that all of a sudden cranks but doesn't run. Here is what i have done and come up with so far. I have no power to fuses 28 & 29 & 5v dc on fuse 34. I removed & test fuel pump relay and found it is good, at the relay port I test volt across point t and point 86 and I get 7v dc(when i put my leads to true grnd on the bottom of the relay board to point 86 i get 12v dc)i removed the fuel pump fuse & placed a jumper wire from point 30 to 87 to test power to the fuel pump fuse slot & i got 12v dc there but still no power to fuse 29 & 5v dc on fuse 34. Reinstall fuel pump fuse, heard the fuel pump running, tried to start the car, it would crank but not run. Any clue as to what i am missing. Do i have a bad ecu or crank sensor?? 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
abdelqadert54
Audi Q7
0
05-03-2013 12:21 AM
O.LOquattro
General Tech
1
04-02-2013 02:09 PM
bigdave1379
Audi A6
4
01-04-2011 06:18 PM
chadha
Computer & Fuel Systems
20
04-21-2007 08:48 PM
chadha
Audi A3
3
03-31-2007 09:18 PM


Thread Tools
Search this Thread
Quick Reply: 98 a4 1.8t fuel and power problem. HELP Please


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.