Question about 1998 Audi A4

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I replaced the engine in my 98 a4 quattro, got it put together and the engine wont turn over. Are there any theft lockout devices programmed into the ecu to keep it from firing? if so, can they be bypassed without using vagcomm

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I don't think there is a immobilizer on that car. Even if there was it has nothing to do with an engine swap. Bad or missing ground to the engine block or miss plugged electrical connector. Are you getting voltage to the starter? How about the starter relay?

Posted on Feb 05, 2010

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Posted on Jan 02, 2017

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1 Answer

Do i need to have my 2004 dodge intrepid anti theft code reset through a dealership if the heads and head gaskets were replaced? the entire top of the engine ws taken apart adn put abcl together.


i would disconnect the battery. removing both the positive and negative battery terminals. with both ends disconnected, hold the two terminals together for about 10 seconds. this will proform a hard reset on most chrysler vehicles. also, if this doesnt work, try turning the key to the on position, and then proforming the hard reset procedure.

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My 98 audi a4 quattro just had thermostat and water pump put in still no heat and still in the shop seems like they cant figure it out either


Have them look at heater control valve. Audis have an exotic heater control valve some are in view in engine compartment, others are BURIED under dash. I highly suspect that be the issue.

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1 Answer

My 98 Audi a4 quattro has sat for about a year after the transmission went bad in it. I charged the battery to see if it would start about a month ago and it did and it seemed fine. I had it towed to a...


The Engine Control Module (ECM) and Transmission Control Module (TCM) can only be accessed using diagnostic equipment (e.g.: VAS, VAG-COM, Bosch KTS, Texa, ...) connected to the data link connector of the car, in order to pull out all DTC (Diagnostic Trouble Codes) memored. Then you will be full informed about pieces out of order, and you will be able to repair damages & replace bad pieces. Therefore you will can erase all faults memored, and reset ECM & TCM. Finally you will start the engine and test the car. If you will send me the engine type, I will can send you back the fuel pump fuse & relay positions, for cheking them, and also all supplementary informations that you need.

Dec 02, 2010 | 1998 Audi A4

1 Answer

Serp.belt route diagram for 98 audi a4 quattro 2.8


The serpentine belt routing diagram for 1998 Audi A4 Quattro 2.8 liters V6 engine:

tdisline_45.jpg


CS = Crankshaft
F = Fan pulley
Gen = Alternator
T = Tensioner pulley
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Nov 26, 2010 | 1998 Audi A4

1 Answer

Will These Spark Plug Wires Work for My Audi?


No. I would go with the cheaper set.

Apr 29, 2009 | 1996 Audi A4

1 Answer

Support Bracket power steering AUDI 1998 2.8


Any comparable car should work. Your car is a 98, so you would have to stick with Audi/VW cars that have the 30v V6 (98-01.5). The 97 and earlier years used an older 12v V6 and those aren't compatible. It's unlikely that the 1.8T models would work either. You'd have to look for A4, A6, and Passat cars in the model range I mentioned, and you may find that if you have a quattro model, your replacement would have to come from a quattro (Audi) or 4motion (VW) car as well. Try to find a donor car with your same drivetrain (30v V6, auto/stick - whichever you have, and 2wd/4wd, whichever you have).

To tell at a glance which engine is which, the 30v has black covers on the valve covers that say "5V" (for five valves per cylinder). The older 12v cars I believe actually say "12v" on them.

Oct 22, 2008 | 1998 Audi A4

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