I need some help here

Reply Subscribe

Thread Tools

Search this Thread

Apr 6, 2002 | 07:17 PM

ICULUKN-C5

Thread Starter

Le Mans Master

Joined: Aug 2001

Posts: 7,064

Likes: 18

From: Arizona

I need some help here

Went racing last night, this morning the car starts fine. I changed the plugs, and took her for a spin. About 20 miles into my cruise, the check engine light comes on and the car begins to buck violently. I shut it down and wait. The car won't idel and has a hard time staying started. When it was acting up, I floored it but it wouldn't go above 3k. I restarted the car and was able to limp it home. My dealer won't be able to take it till monday... Any suggestions.

Here are the codes that I got:

10- PCM P0171 H
10- PCM PO174 H
AO- LDCM U1064 H
BO-RFA U1000 H
BO-RFA U1064 H

I'm pretty sure that the 1064 code is from my top down tech windows commander.

[Modified by ICULUKN-C5, 4:25 PM 4/6/2002]

Apr 6, 2002 | 07:51 PM

Arnie

Le Mans Master

Joined: Apr 2000

Posts: 5,532

Likes: 0

From: Illinois

Cruise-In II Veteran

Re: I need some help here (ICULUKN-C5)

I'm not a tech, but i did check the service manual:
P0171 - Fuel Trim System Lean Bank 1
P0174 - Fuel Trim System Lean Bank 2
U1000 - Class 2 Data Link Malfunction

Can't help much more, but I would check under the hood and dash for any loose connections first.

Good Luck!

Apr 6, 2002 | 08:34 PM

2000^C5

Race Director

Joined: Jan 2000

Posts: 12,407

Likes: 0

From: My barber didn't know when to quit... Do you?

Re: I need some help here (ICULUKN-C5)

Here, check this out. https://www.corvetteforum.com/techti...D=26&TopicID=1

Apr 6, 2002 | 09:42 PM

ICULUKN-C5

Thread Starter

Le Mans Master

Joined: Aug 2001

Posts: 7,064

Likes: 18

From: Arizona

Re: I need some help here (2000^C5)

What does this mean>

P0171 - Fuel Trim System Lean Bank 1
P0174 - Fuel Trim System Lean Bank 2
U1000 - Class 2 Data Link Malfunction

Can any of it be traced back to me changing the plugs today?

Apr 6, 2002 | 10:58 PM

ICULUKN-C5

Thread Starter

Le Mans Master

Joined: Aug 2001

Posts: 7,064

Likes: 18

From: Arizona

Re: I need some help here (ICULUKN-C5)

Help???

Apr 7, 2002 | 03:05 AM

racetchr

Pro

Joined: Oct 2000

Posts: 545

Likes: 1

From: Charlotte NC

Re: I need some help here (ICULUKN-C5)

I'm sure you have already checked this (?), but if the intake tubing has come loose or developed an air leak this would do it. My RM Twin-Tube design came loose from the maf and had the same symptoms as you describe.

Apr 7, 2002 | 10:24 AM

ICULUKN-C5

Thread Starter

Le Mans Master

Joined: Aug 2001

Posts: 7,064

Likes: 18

From: Arizona

Re: I need some help here (ICULUKN-C5)

I am a complete idiot. :crazy: The powerduct had a small gap between the MAF and the power duct. Thanks for your input. You saved my weekend.

Apr 7, 2002 | 10:38 AM

vettenuts

Team Owner

Joined: Mar 1999

Posts: 22,025

Likes: 192

From: At the beach in little Rhody

Re: I need some help here (ICULUKN-C5)

Got to love it when the fixes are easy like this one. I started my car after having the battery out and chaning the plugs and knew the idle required a "re-learn". I started the car and it raced and then slowed and raced and slowed and then settled into a lumpy idle. I pulled it out of the garage and the idle went nuts again. I am thinking to myself that I didn't believe the idle re-learn process would be so radical. Then I step on the brakes and the pedal is as hard as a rock. The big lightbulb goes off and I realize I didn't hook the vacuum line to the brake booster back up. Duh :crazy:

All was fine once I put that on, so we have all been there :cheers: