10-11-2009, 02:12 PM
|
||||
|
||||
|
We are going to need a bit more info than that. Are the fans just not coming on? How are all of your fuses? Have you checked the relays for the fans? When you kick the A/C on, do the fans come on? If you have a code reader, when you plug it in, do the fans come on?
__________________
1996 Z28, OBD-I Conversion, SLP CAI, Hooker Super Comp Headers, Custom ORY, Custom Exhaust, 3.73's, It's Slow... For everyone asking about Gear RPO codes, here they are... Gu2 : Axle rear, 2.73 ratio, gu4 : Axle rear, 3.08 ratio, gu5 : Axle rear, 3.23 ratio, gu6 : Axle rear, 3.42 ratio Quote:
|
|
10-11-2009, 02:43 PM
|
||||
|
||||
|
Then what is the scenario when they don't come on? You're not telling us anything.
__________________
Rob B 95Z A4 Tech Page (Part numbers / locations, How to's, Schematics, Diagnostic Trouble Codes...) Home Page - shbox.com
|
|
10-11-2009, 02:47 PM
|
||||
|
||||
|
Rob will be able to answer this better and exact, but the fans will not come on until about 225*F. I think that is for stage 1 single fan, or low speed on both. Then a little higher, it will kick on both, or high speed. Like I said, Rob will be able to answer that better.
But, if they are not coming on, and your car is getting to 260*F, then you need to check the sensor in your water pump, it may be bad.
__________________
1996 Z28, OBD-I Conversion, SLP CAI, Hooker Super Comp Headers, Custom ORY, Custom Exhaust, 3.73's, It's Slow... For everyone asking about Gear RPO codes, here they are... Gu2 : Axle rear, 2.73 ratio, gu4 : Axle rear, 3.08 ratio, gu5 : Axle rear, 3.23 ratio, gu6 : Axle rear, 3.42 ratio Quote:
|
|
10-11-2009, 03:01 PM
|
|||
|
|||
|
overheating
i just had headgaskets and new values put in and i have let it heat up to about 230 but dont want to run it hot. is there any way to check that and if so how do i go about doing that
|
|
10-11-2009, 03:08 PM
|
||||
|
||||
|
follow the link below to test your temp sensor on the water pump...
4th Gen LT1 F-body Tech Articles
__________________
1996 Z28, OBD-I Conversion, SLP CAI, Hooker Super Comp Headers, Custom ORY, Custom Exhaust, 3.73's, It's Slow... For everyone asking about Gear RPO codes, here they are... Gu2 : Axle rear, 2.73 ratio, gu4 : Axle rear, 3.08 ratio, gu5 : Axle rear, 3.23 ratio, gu6 : Axle rear, 3.42 ratio Quote:
|
|
10-11-2009, 03:09 PM
|
|||
|
|||
|
they dont come on at all unless i turn on the a\c was just wondering where to start lookin for the problemn i just had head work done i just brought the car and was told that it just needed a head gasket but cant get the fans to work any suggestions
|
|
10-11-2009, 03:17 PM
|
||||
|
||||
|
That is where I would start. But, the engine has to get quite hot in order to get the fans to come on. When you are going down the road, your fans will hardly ever come on, unless there is a problem with the rad, or air dam. But, if you can splice the wires on the W/P sensor, you can hook up your ohm meter and watch what the PCM is seeing. Take that, and compare it to your gauge inside the car, or even an external mechanical gauge under the hood in the pass head. Just don't let it go over 250, with good antifreeze in the car and you should be fine.
__________________
1996 Z28, OBD-I Conversion, SLP CAI, Hooker Super Comp Headers, Custom ORY, Custom Exhaust, 3.73's, It's Slow... For everyone asking about Gear RPO codes, here they are... Gu2 : Axle rear, 2.73 ratio, gu4 : Axle rear, 3.08 ratio, gu5 : Axle rear, 3.23 ratio, gu6 : Axle rear, 3.42 ratio Quote:
|
|
10-13-2009, 02:11 PM
|
||||
|
||||
|
I have a switch so I can turn them on manually maybe youo can look into that and just get a switch inside so you can turn them on manually .
__________________
We all take the risk one way or another ..... -1993 Chevorlet Camaro Z28 LT1 350 Fire engine Red 40 Series flowmaster straight pipe, Throttle body Air Foil, K&N Real Cold Air intake, Cowl Fiberglass Hood -1986 Camaro I-Roc Z 350 4 Barrel Double Pupmer Holley Blue. *Julio*  Sig provided by Ethan you Da MAN !
|
|
10-13-2009, 02:40 PM
|
||||
|
||||
|
Did you make sure to purge all the air out of the cooling system after the head work? Sometimes it can take a while for all the air to come out, and if the heads were off there was alot of air in there.
Next thing is the factory gauge can be misleading, did the car ever hit the red zone on the factory gauge? The fans will not turn on (with a/c off) untill right before the red zone. Sometimes it looks like its going to hit the red then fans turn on high speed and cool down. If the fans turn on when scanner and a/c switch is turned on then i dont think its a ecm issue. You may not be use to how hot lt1 run stock. Get a 160 thermostate, and make your own jumper harness so you can turn fan's on when you want.
__________________
Hello my name is TOM and my car is FROSTBITE!  95 Z28 383, Ported Heads,intake,cc306,crane springs,1.6rr,comp pushrods,Flame covers,lt4KM,Full MSD,NOS wet,58mm polished TB,SLP CAI,Low Alt,Mac headers,Flowmaster,Canton pan,melling pump,billet FPR,accell 42lb,Lakewood drag shocks,BMR Arm's,Hotchkis panhard ajust,moser axle,eaton locker,4.10,built 4l60e,2800stall,No Air!Smog!PS!Heater!Egr!Seats! Its all stock i swear
|
|
10-13-2009, 03:18 PM
|
||||
|
||||
|
when i first got my lt1 it had a bad pcm in her. the fans wouldnt come on. not saying thats your problem. my car had a blowned up motor when i bought her too. and the raditor was clogged up too.
__________________
 names Tom: 1994 camaro z28, LT1 383 stroker 10.5 to 1 compression,bored 30 over,motor balanced, blue printed, with Keith Black pistons, cleaves bearings, scat crank, balanced flex plate and balanced harmonic with 5 angle valve job, dual heavy duty valve springs, new valve guilds and steel oil pump drive with high volume oil pump,160* t stat, 488 cam, 8mm wires, 3.42 gear, 50`s all around, firm shift, pcmforless, p pump!, cats! amp 1 (500w) type R mono Apline, with 1 12" type R Alpine subwoofer.
|
|
10-13-2009, 03:34 PM
|
||||
|
||||
|
Quote:
P.S. I forgot to mention I used the "Water Wetter" additive. For $10 its a deal in my book. Red Line Synthetic Oil - Water Wetter®
|
 |
| Thread Tools | Search this Thread |
| Display Modes | |
|
|
Linear Mode
