Radiator Fan tuning on even Cold Start ?

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Jan 16, 2010 | 10:22 AM

#16

Injuneer

Administrator

Joined: Nov 1998

Posts: 71,122

From: Hell was full so they sent me to NJ

Quote:

Originally Posted by teamstream

I just got my car running, and my fan kicks on almost right away. when it does it pops 29 EAS Electrical fault...any idea what that means? i also have this suspicous wire on the pass side thats not hooked up and appears to have melted on the side where is hooks to a sensor. i enclosed a pic of the plug...any ideas?? i wasnt sure if this is all being cause my this wire unhooked?

Generally not a good idea to "highjack" someone elses thread. Best idea is to start your own thread. When you do start your own thread..... ADD A SIGNATURE. That gives people the info up front, so they can help you.

In the 94-95 LT1's, DTC 29 indicates a problem with the AIR pump. When that codes sets (see rant above) the fans run all the time. Generally, it means the fuse for the AIR pump is blown, because in the OBD-I cars you can unplug the AIR pump and not get a code, as long as the fuse is good.

Next time you get a code, look it up on Shoebox's list, since it is LT1-specific:

http://shbox.com/1/Dtcs.htm

The AIR pump is on the driver's side of the engine. The photo you posted appears to be on the passnger side. Look at Shoebox's wiring harness photo, and see if tou can match it up. To get an enlarged photo of any part of the harness, click on the part you want to enlarge.

http://shbox.com/1/harness.htm

Jan 16, 2010 | 12:53 PM

#17

nielsencc86

Registered User

Joined: Jan 2010

Posts: 2

From: Provo, UT

One other thing to check is if your a/c is on. I know you say it is colder than a witch's tit but you never know if some one clicked it on by mistake or with the defrost maybe? Start with the most simple explanation first.

Jan 16, 2010 | 06:05 PM

#18

Mir Hussain

Thread Starter

Registered User

Joined: Oct 2000

Posts: 381

From: Delta Quadrant (Toronto)

Quote:

Originally Posted by Injuneer

I already explained. When some codes set, the fans come on. You asked specifically about the fans coming on at COLD STARTUP. You did not ask about them staying on all the time. But just to clarify, since there seems to be a HUGE communications gap here - THE FANS WILL RUN ALL THE TIME WHEN SOME CODES ARE SET.

My comment about a grounded wire was not for you. I'm not sure why the post about the knock sensor was even added????

I hear ya~ nd hear ya very good

I also know about wire ground was not for me

Quote:

Originally Posted by Injuneer

Are you reading anything that we are posting. I mentioned that the fans will run if there is an SES light. You told me no SES light. Then I mentioned that the fans will run if there are some codes. You ignored me. Now you are telling me you have a code for the AIR pump. That is a code, and it turns on the SES light. When it setS THE FANS RUN ALL THE TIME. That is why your fans are running all the time.
Now you are telling us someone altered the wiring to the fan relay. Don't you think info like that should have been posted up front?
And what does "No I have not run the car for 1 1/2" mean?
I really can't handle this... getting to damn old and cranky. Maybe someone else can help you.

Yes you are right I should have posted about fan wiring!
Since I didn't run the car 1 1/2 year I didn't had every thing remember

sorry
BTW I love your location
again sorry for that info not posting
Perhap I should I need to think straight and lay out every thing in my before I am posting