tomsawyer
Well-known member
Hi Everyone, hopefully you can help me out with these 2 issues. I have 2005 Passat TDI w/ 72k.
The first issue is upon cold start up, with the car in drive and foot on the brake, the engine idles not roughly but sort of hiccups at 800 rpm, which seems to be a smooth idle. In neutral or park, there is no hiccup - only in drive with foot on the brake (like at a stop light). As soon as the car warms to normal operating temp, the idle hiccup goes away. I can describe the hiccup as the idle is at 800 rpm then drops suddenly to 780 or 770 rpm, the engine catches itself, then returns to 800 rpm. Happens about every 5 seconds when cold.
The other issue happened for the first time to me when going to the train station. I started the car and went to the DD for a cup of coffee. Everything was fine. I left the car idling for about 5 minutes to go inside. When I came out, put the car in drive, I noticed very low power - almost like the car was running on 2 cylinders. Engine wouldn't go over 2500 rpm. No lights or info came up on the dash and didn't see any strange smoke from behind. I made it to the train station, shut the car off and left it there to go to work. When I got into the car last night, everything worked fine and I had full power going home. Today, I had full power going to the train station.
Any idea what's going on?
Thanks to everyone for their input.
The first issue is upon cold start up, with the car in drive and foot on the brake, the engine idles not roughly but sort of hiccups at 800 rpm, which seems to be a smooth idle. In neutral or park, there is no hiccup - only in drive with foot on the brake (like at a stop light). As soon as the car warms to normal operating temp, the idle hiccup goes away. I can describe the hiccup as the idle is at 800 rpm then drops suddenly to 780 or 770 rpm, the engine catches itself, then returns to 800 rpm. Happens about every 5 seconds when cold.
The other issue happened for the first time to me when going to the train station. I started the car and went to the DD for a cup of coffee. Everything was fine. I left the car idling for about 5 minutes to go inside. When I came out, put the car in drive, I noticed very low power - almost like the car was running on 2 cylinders. Engine wouldn't go over 2500 rpm. No lights or info came up on the dash and didn't see any strange smoke from behind. I made it to the train station, shut the car off and left it there to go to work. When I got into the car last night, everything worked fine and I had full power going home. Today, I had full power going to the train station.
Any idea what's going on?
Thanks to everyone for their input.