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A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

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Old 05-03-2001, 04:13 PM   #1
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Default hesitation on acceleration

Need some ideas on what it might be.
It is slight and mostly when cold but does it less when warm
Hoping it might be just an ecu adjustment!
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Old 05-03-2001, 04:17 PM   #2
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Default all my engine "klunkiness" was from deposits and such, gumout :)

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Old 05-03-2001, 04:18 PM   #3
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Default MY2001? Are you chipped?

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Old 05-03-2001, 04:33 PM   #4
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Default Mine is a 97 1.8T Do you put gumout in the gas tank or spray it in the thottle body??

Where do you spray the gum out??
where was the buildup on yours??
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Old 05-03-2001, 04:38 PM   #5
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Default get a quality fuel treatment and put it in. the 1.8T's plugs have a tendency to get carbon deposits

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Old 05-03-2001, 04:54 PM   #6
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Default you pour the gumout injector cleaner in your gas tank :) (more)

do you run 91+ gas? try using a bottler of octane boost once in a while. I alternate between the stp fuel treatment (80cents), the concentrated fuel treatment, octane boost, injector cleaner, whatever I feel would be best for the car at the time. I try to put at least one of the above every 2-3 tanks. When I bought the car the engine was horribly gunked up and badly down on power. I used all of the above in double doses for 2 weeks and it cleared things right up along with some new plugs and filters. So far using the occasional additive regime I've had no problems whatsoever.

Hope this works for you!
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Old 05-03-2001, 05:33 PM   #7
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Default Thanks ...does anyone know if winter fuel is different than summer fuel???

Thanks
I am just wondering if the fact we are in a seasonal transition
is it true that winter fuel is different than summer fuel??
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Old 05-03-2001, 06:28 PM   #8
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Default Uh ohhhh :(.......(ALOT more)

My old car did the same thing. Its the most pronounced when the engine is cold and for the most part goes away once everything is warm. Started out just like what you described, and my problem got worse with time. Seemed to be the worst starting off from a dead stop w/ a cold engine. My car sounded like it was bogging or something, really weird, NO power while making that sound. One time I was at the bottom of a hill at a red light right after I cranked the car. I almost had to pull to the side, it barely had enough power to get to the top (This was at the problem's peak)
I Took it to the dealership numerous times. Hell, the Regional service manager came and got the car and took it to the place where they teach to be Audi mechanincs. Replaced items (lets see if I can remember them all): All 4 spark plugs, Mass air, entire throttle body unit, ECU, air filter, fuel filter, injectors, various cleaning/replacement of different sensors, etc..... End result. Yep, still did it. While not as pronounced/often as before the transplant , it was still a problem. I got rid of that car, much to my service department's relief.
I hope I didn't just describe your cars behavior, for your own sake. Best of luck!!
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Old 05-04-2001, 08:40 AM   #9
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Default Yes......got some Techron.....don't waste your time with Gumout.

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Old 05-04-2001, 08:40 AM
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18t, 1995, 90, a4, acceleration, audi, b5, b7, corrado, hesitates, hesitation, s6, stop, stumble, tip, volkswagen


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