weedeater
Top Post Dawg
While on a road trip over the weekend, I noticed that the cruise would not hold speed going up hills. 'Hmmm' I thought.
Pertinent Info:
2001 Jetta 5-speed. 22k miles.
> changed air filter and fuel filter last weekend. I was also messing around in the area of the EGR and antishudder valves, removing the intake for inspection (oily but not blocked).
So, I whip out my laptop and plug it in to check Group 3 and Group 11.
> DTC for Boost control negative deviation.
No real suprise.
So I drive along looking at both MAF and MAP readings. Both the MAF actual and MAP desired were low, with the MAP being the worst. And I thought, 'hmmmm, chicken or the egg? Does a low MAF create a low MAP, or does a low MAP create a low MAF?'
I disconnected the MAF. No improvement, just another DTC.
> And then I noticed that the engine was shuddering on shutdown, like the valve was no longer working.
> and no smoke. Just no power.
So then I thought maybe I was loosing vacuum or accidently pulled a hose loose when fiddling around last week. Since it was raining all weekend I haven't had a chance to look under the hood.
Opinions welcome.
Pertinent Info:
2001 Jetta 5-speed. 22k miles.
> changed air filter and fuel filter last weekend. I was also messing around in the area of the EGR and antishudder valves, removing the intake for inspection (oily but not blocked).
So, I whip out my laptop and plug it in to check Group 3 and Group 11.
> DTC for Boost control negative deviation.
No real suprise.
So I drive along looking at both MAF and MAP readings. Both the MAF actual and MAP desired were low, with the MAP being the worst. And I thought, 'hmmmm, chicken or the egg? Does a low MAF create a low MAP, or does a low MAP create a low MAF?'
I disconnected the MAF. No improvement, just another DTC.
> And then I noticed that the engine was shuddering on shutdown, like the valve was no longer working.
> and no smoke. Just no power.
So then I thought maybe I was loosing vacuum or accidently pulled a hose loose when fiddling around last week. Since it was raining all weekend I haven't had a chance to look under the hood.
Opinions welcome.