Skip to main content

An all-new Passat, based on the Volkswagen Group B5 platform, was launched in 1998 in North America.

42 Questions View all

fluctuating idle on 2003 passat

why does 2003 passat fluctuates idle when weather is very cold?

Answer this question I have this problem too

Is this a good question?

Score 1
Add a comment

1 Answer

Most Helpful Answer

@mcclaine67 , Adrian, there are quite a few things that could cause your idle problem. Dirty throttle body, dirty/faulty MAF sensor, Vacuum leaks from hose off/cracked or bad seal at intake or throttle body base, O2 sensor faulty, temp. sensor faulty,etc.etc..

Get the car scanned as a first step to see if there are codes present that may lead you directly to the fault. Some of the auto parts suppliers offer free code reading like Pepboys, Nappa, Advanced auto parts,etc and some of the guys are very knowledgeable and may have seen the issue often and put you on the right track. If not comfortable working on your vehicle have a good tech. have a look, diagnose and estimate repair.

Good luck.

I hope this helped you out, if so let me know by pressing the helpful button.

Was this answer helpful?

Score 3
Add a comment

Add your answer

Adrian will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 0

Past 30 Days: 0

All Time: 245