P0300 P0171 P0174 code errors resolved

[cold_surfer]

Yesterday I found the culprit behind my P0171, P0174, and the latest one P0300. on my 2002 TA there was a hole/cut in the the small PCV tube going from the passenger front base of the intake manifold to the PCV valve.

Symptom: rough idle, SES codes above at random times, once in a while stalling at idle-1/8 throttle, slight hesitation off the line. no problems at WOT.

Solution so far: 2.5" of 3/8 braded fuel line and hose clamps to replace the 591 rubber grommet. dealer wants $111 for the hose because it's part of the whole assembly. The part is #591 on the PDF file -- it's part of assembly 565 ($111). The 550 hose was also suspect so I put hose clamps on both ends of that bad boy.

Go to the LS1 folder and look at the PCV pics and dealer part page...
http://public.me.com/solutionhost

not sure how to upload pics here... so the link is all I got... Check yours out -- mine lasted to about 92K.

Peace,
Tony

[cold_surfer]

BTW: GMPARTS DIRECT has the assembly for about half the dealer cost:

GM PART # 12590632
CATEGORY: All
PACK QTY: 1
CORE CHARGE: $0.00
GM LIST: $111.31
OUR PRICE: $65.98

[Hi-Po]

Thats awesome! Thanks for getting on here and tell your problem/solution. These are fairly common codes, and it will help somebody sometime if they search it out. Glad you got it fixed.

[0rion]

Yesterday I found the culprit behind my P0171, P0174, and the latest one P0300. on my 2002 TA there was a hole/cut in the the small PCV tube going from the passenger front base of the intake manifold to the PCV valve.

Symptom: rough idle, SES codes above at random times, once in a while stalling at idle-1/8 throttle, slight hesitation off the line. no problems at WOT.

Solution so far: 2.5" of 3/8 braded fuel line and hose clamps to replace the 591 rubber grommet. dealer wants $111 for the hose because it's part of the whole assembly. The part is #591 on the PDF file -- it's part of assembly 565 ($111). The 550 hose was also suspect so I put hose clamps on both ends of that bad boy.

Go to the LS1 folder and look at the PCV pics and dealer part page...
http://public.me.com/solutionhost

not sure how to upload pics here... so the link is all I got... Check yours out -- mine lasted to about 92K.

Peace,
Tony

that's pretty common really. That's the first place I tell people to look if the symptoms sound like a vacuum leak. Glad you got yours figured out and thanks for posting.....will help someone else down the road.

[maro1360]

throwin the 171 and 174!!! im tryin to fix my car today since i do not have work. im also throwin 704 which is the clutch switch and a 401 whicgh is egr insufficient flow. if any1 can get back to me that would b awsome. im going to replace the egr valve today and im trying to figure out how to bipass the clutch switch. im still tryin to figure out wat hose i got that has a leak. ruff idle some times. idles low if sittin at idle for over 2 mins..