I have a 2000 jetta tdi that has a loss of power while pulling a hill and from a dead stop. The check engine light is on and the codes that came up are,P0380(glow plug/heater circuit a)P1248(injection start control).Would any of these codes result in a loss of power? I replaced the mass air flow and the turbo a few years back. The car has about 125000miles on it.Any advice on this issue would be great.
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it sounds like a wire is bad/ shorting out. Put it in a dark garage open the hood have someone start it while you look under the hood if they give it a little fuel you will see an arc from the bad wire.
find your local vw service center and see if they can plug their computer in to see if there are any codes on the cpu. there may be one for an intermitent for the turbo. i ran into the same problem last month and it was the turbo veins are sticky so occasionaly it lack power going up hills. it did not cause the check engine light to come on, but there was a code on the cpu when they checked it. if it happens again while you are driving, pull over, shut the car off for 10-30 secs then restart it and see if it makes a difference. when it happened to me i called my guy and thats what he had me do and it was like a new car after that.
MAP sensor. Look on Google to see what the readings should be when you test the circuits. Its real easy to check yourself, all you need is a multimeter. Classic syptom of a failing MAP sensor is power loss on inclines. Its the cheapest fis, failing that, there could be trouble with piston rings, or with the Impeller of the turbo being damaged. Good luck