DTC 0171 and 0174
Le Mans Master
Joined: Aug 1999
Posts: 7,339
Likes: 137
From: WilkesBarre PA
Re: DTC 0171 and 0174 (OcalaGuy)
The Helms says If both codes are set at the same time it could be a vacuum leak. Check for a faulty PCV, oil cap is tight and dipstick is seated properly.
Also a fuel delivery problem. Fuel filter? Bad or weak fuel pump?
Also a fuel delivery problem. Fuel filter? Bad or weak fuel pump?
Thread Starter
Race Director
Joined: Aug 2001
Posts: 19,812
Likes: 0
From: Weirsdale (outside of Ocala) Florida
Re: DTC 0171 and 0174 (RichS)
Thank you for the info.
The fuel filter was changed about a year ago and I have maybe put 3,000 miles on the car since then. The fuel pump checked OK about 6 months ago.
I will have to check on the other items you talked about.
Thanks again.
The fuel filter was changed about a year ago and I have maybe put 3,000 miles on the car since then. The fuel pump checked OK about 6 months ago.
I will have to check on the other items you talked about.
Thanks again.
Thread Starter
Race Director
Joined: Aug 2001
Posts: 19,812
Likes: 0
From: Weirsdale (outside of Ocala) Florida
Re: DTC 0171 and 0174 (OcalaGuy)
BINGO......
I had a chance to look for the loose line. There it was, a big huge black hose under the drivers side rail cover. It was completely off the port. The car even idles better.
I turned off the SES light with my palm pilot. Now I will see if I get any further codes.
Thanks for the help gang.
I had a chance to look for the loose line. There it was, a big huge black hose under the drivers side rail cover. It was completely off the port. The car even idles better.
I turned off the SES light with my palm pilot. Now I will see if I get any further codes.
Thanks for the help gang.
