MrWalkerrr

Very sluggish acceleration, pedal to floor just to slowly get up to 45 mph. Can still take the highway, but takes way too long to get up to speed.

I just got the car and don't know if the problem slowly happened or all at once.

CEL on dash codes:
P1136
p0134
p0300
p0411
Sensor 1 no activity

So far I've unhooked the MAF wire and test drove, no difference. I did notice the clip was broken, but with there being no difference, I figure that's not the problem.
Ive also replaced the plugs and 02 sensor, and put a new cat gasket on. Nothing has fixed the problem.


Any help is appreciated, thanks

4Driver4

Your post almost makes me curious enough to ask what engine is in the car.



Almost.

Seriously, how about posting the year and model, along with the meanings of the codes you posted?

MrWalkerrr

Sorry about that, meant to put it in the title.
it's a 2000 Audi Quattro A4 1.8t ATW

MrWalkerrr

P1136: fuel trim: bank 1: system too lean
p0134: bank 1 sensor no activity (02 sensor no activity) - I believe this has been solved by replacing the sensor before cat.
p0300: random cylinder misfire
p0411: secondary air injection system incorrect flow

clancy

silly question, is it an automatic?

MrWalkerrr

yes it is

clancy

Is it possible you are in the limp mode? What does the selector for the gear shift say? I believe in the limp mode it does not have a normal read out.

MrWalkerrr

I don't see anything out of the ordinary but it does seem like limp mode, it won't get over 2000 rpm. I've never owned an Audi before but everything seems as it should display wise.

clancy

I have never been in limp mode but I understand the gear selector readout somehow changes. Maybe it does not light up all the gears or something. Anyway, the transmission only operates in one gear, 4th I think. It does not shift and starts out from a stop obviously very slowly. It does not sound like that is your problem. Sorry if I've sent you in the wrong direction.

clancy

If your fuel trim indicates a too lean condition then have you checked for air leaks in the intake system? Turbo engines are very sensitive to air leaks. This would be after the MAF. Look for broken or cracked air lines. Or listen for air leaks. Can be quite difficult to find. On an old car this is very common.

Search this forum for finding air intake leaks.