Need a quick lesson please
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Joined: Oct 2003
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From: mass
Need a quick lesson please
Hello, I havent posted on the forum before, but decided to see what can be done on my 1990 100Q 5 speed. I have owned this car since 1998 and have taken excellent care of the car. Even though I purchased a 2001 A8L this year, I still love my 100 and dont want to give it up. The car has small issues but overall is solid, clean and the body is almost perfect just faded paint and small dings.
The engine is a stock 10V 2.3 liter with 160k miles and still runs smooth, and has no issues. I only have the K&N filter as a mild upgrade. The one problem I have with the engine is lack of power, especially above 4000rpm when it starts to struggle. Is this normal or is there something holding back the power.
What if anything can be done to improve the performance. I am not looking for massive improvement, just a little more power for getting on the highway and merging with traffic.
Thanks
The engine is a stock 10V 2.3 liter with 160k miles and still runs smooth, and has no issues. I only have the K&N filter as a mild upgrade. The one problem I have with the engine is lack of power, especially above 4000rpm when it starts to struggle. Is this normal or is there something holding back the power.
What if anything can be done to improve the performance. I am not looking for massive improvement, just a little more power for getting on the highway and merging with traffic.
Thanks
AudiWorld Super User
Joined: Aug 2003
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If it's a manual trans - shift at the red line - auto trans - have somebody push!
I had the same engine in the old 80Q - had to make it sing high 'C' to go anywhere with any authority. (The current 5 cyl in the S6 be an entirely different animal. WOO HOO!)
Re-reading your post - struggles ABOVE 4K? Ooh... that's not so good - that's when the old girl should start coming alive! Check for vacuum leaks - esp. the rubber boot between the TB and the fuel distributor - there can be cracks that are sealed at idle - but open when the engine moves under torque.
Also -when were plugs / wires/ cap & rotor done? Made by Bosch or Beru? (If no - dump 'em!)
Don't forget to check the oil breather for leaks, too! (If you have the old rubber breather hose on the driver's side - is it collapsed? You can assemble a copper pipe - use a long & a short piece with an elbow between - the short piece long enough to be clamped in behind the engine - the long piece almost to the engine spigot. Save some $$$!!)
Re-reading your post - struggles ABOVE 4K? Ooh... that's not so good - that's when the old girl should start coming alive! Check for vacuum leaks - esp. the rubber boot between the TB and the fuel distributor - there can be cracks that are sealed at idle - but open when the engine moves under torque.
Also -when were plugs / wires/ cap & rotor done? Made by Bosch or Beru? (If no - dump 'em!)
Don't forget to check the oil breather for leaks, too! (If you have the old rubber breather hose on the driver's side - is it collapsed? You can assemble a copper pipe - use a long & a short piece with an elbow between - the short piece long enough to be clamped in behind the engine - the long piece almost to the engine spigot. Save some $$$!!)
Thread Starter
AudiWorld Member
Joined: Oct 2003
Posts: 139
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From: mass
Re: If it's a manual trans - shift at the red line - auto trans - have somebody push!
Are there any images available showing the components to check. I should know what TB is but am drawing a blank now. Thanks.
AudiWorld Super User
Joined: Oct 2002
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From: Gibsonville, NC
When did you last change the plugs?
Some other ideas:
Are the fuel filters original? Is ans is yes... change them both.
What about the o2 sensor? Original? Might be time for a change, if yes.
Are the fuel filters original? Is ans is yes... change them both.
What about the o2 sensor? Original? Might be time for a change, if yes.
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