Marko A4'04

I have 70k on mine and everything was running fine until this morning. The engine light started blinking and the car 'shaking' - mostly below 2,000 rpms. To be honest the engine light was solid on for the last month but did not get a chance to check it out. The mechanic says its the "fuel injection sensors" and will cost $890 with labor to get all four of them replaced. Should I replace only one of them now and wait for the rest to go bust? all replace all four at once? is this a common thing at 70k? anything else i can expect in the near future? I just love this car but am not really knowledgable on its maintainance. Thanks in advance for your advise.
Marko

MikTip

Re: Fuel Injection Sensors = 'No such animal!' More than likely coils ;o)

Marko A4'04

Coils it is then. I am really not savy with the whole mechanical part. Is that normal for 70k?

diagnosticator1

If you have a 3.0l, it has four sensors, and the cost is more than $200 each. The O2 sensors are involved with controlling the fuel injectors duty cycle/fuel trim.

Marko A4'04

Yes its a 3.0L so I guess the $890 for four of them (including labour) is reasonable...thank you

Bronze

I'd get the fault codes that set the CEL, and tell us what they are. I'd suspect that probably only one component has an issue, and so only one coil, or one spark plug, or one oxygen sensor, is the culprit. Changing all of anything is a potential just to lighten your wallet.

Shameless in Chicago

I don't suppose you're also a Serb.

DWP

What codes did he get? It's likely a coilpack - cheap and easy fix.

diagnosticator1

Yes, 2nd ^^^. ...

Marko A4'04

OK - I just got a quote from the mechanic. The ignition coils are burned and he is replacing all of them and of course the spark plugs. He is replacing only one sensor. Total (with labour) is $900!!!!!