Need some input PLEASE

**1 RedHot TransAm** · 09-19-2010, 02:35 PM

Need a little help, when I shut down my car it makes kind of a slight air compression sound that stops after bout 7-8 seconds, kind of a mild hissing some where around the engine. WTF is that? I did also notice I have a slight oil leak that started about a week ago. Could the two problems be connected? I really dont need this crap I hope its not a big deal, cause I just recently had a hospital trip with no health insurance and owe a couple thousand, im stressed to the max, any help would be great thanks - Jason

btw I ment to put INPUT* IN THE SUBJECT TITLE

**Cutlass** · 09-19-2010, 05:49 PM

Fixed your title for you there.

Could the hissing be the A/C? The pressure has to equalize from the high side to the low side after the AC is turned off. It'll hiss as it equalizes

**98TransAmWs-6** · 09-19-2010, 07:53 PM

It's the AC like Cutlass said the pressure has to equalize but also check the compressor and make sure that it's not leaking because that will make it hiss too.

**sunsetorangess** · 09-20-2010, 01:15 AM

Originally Posted by Cutlass

Fixed your title for you there.

Could the hissing be the A/C? The pressure has to equalize from the high side to the low side after the AC is turned off. It'll hiss as it equalizes

Thats what i was thinking...
J

**1 RedHot TransAm** · 09-20-2010, 10:11 AM

Thanks alot guys, my air was turned on the defrost and was on low, thats probably why I did'nt notice it on. I turned it off and no more hiss

. Need a little more advise though, I think my front oil pan gasket is leaking and I also wonder generally how much that would cost to fix at an auto shop, just a ball park estimate would be great. Would it be wise for me to fix that before I store it next month or could it wait? Cause I dont want all the oil leaked out of my car when I take it out in 6-7 months. And FYI the leak is'nt to bad, some days after I drive it she does'nt leak anything after a few days, but other times after a few days there will be a penny size drop. Kinda weird how it dont leak sometimes after sitting a few days and sometimes it does. Thanks -Jason

**98TransAmWs-6** · 09-20-2010, 11:29 AM

Originally Posted by 1 RedHot TransAm

Thanks alot guys, my air was turned on the defrost and was on low, thats probably why I did'nt notice it on. I turned it off and no more hiss

. Need a little more advise though, I think my front oil pan gasket is leaking and I also wonder generally how much that would cost to fix at an auto shop, just a ball park estimate would be great. Would it be wise for me to fix that before I store it next month or could it wait? Cause I dont want all the oil leaked out of my car when I take it out in 6-7 months. And FYI the leak is'nt to bad, some days after I drive it she does'nt leak anything after a few days, but other times after a few days there will be a penny size drop. Kinda weird how it dont leak sometimes after sitting a few days and sometimes it does. Thanks -Jason

I wouldn't pay anyone to do that. Do it yourself. I don't think it would be harmful to wait as long as its not that bad(and you said it wasn't). But there also would not be any harm in doing that before you store it so you have peace of mind when you store it that the leak is fixed that and you don't come back and there is a lot of oil on the floor.

**rkh3** · 09-20-2010, 03:11 PM

If it is the oil pan gasket it will not leak if parked, except residual oil that may have leaked out when driving.

**1 RedHot TransAm** · 09-20-2010, 04:06 PM

Originally Posted by 98TransAmWs-6

I wouldn't pay anyone to do that. Do it yourself. I don't think it would be harmful to wait as long as its not that bad(and you said it wasn't). But there also would not be any harm in doing that before you store it so you have peace of mind when you store it that the leak is fixed that and you don't come back and there is a lot of oil on the floor.

Yeah, I'd like to but my wrenching skills are limited, and yeah money wise i'd like to wait next season to fix it, but the peace of mind over the winter would make me really happy to...I called a guy today and he said it would be like $360 or so bucks

I really gotta learn to do some of this shit my self.

**1 RedHot TransAm** · 09-20-2010, 04:09 PM

Originally Posted by rkh3

If it is the oil pan gasket it will not leak if parked, except residual oil that may have leaked out when driving.

Hmm, interesting that might be the reason why its so random when I find a spot. I'll look under the car before I take a drive and SOMETIMES nothing will be there, but I come home AFTER the drive i'll look under it a little while later and theres a small oil drip there..., Thanks

**98TransAmWs-6** · 09-20-2010, 04:40 PM

Did the guy say what exactly is wrong? I could prolly explain to you exactly how to fix it.

**Cutlass** · 09-20-2010, 05:42 PM

Originally Posted by 1 RedHot TransAm

..I called a guy today and he said it would be like $360 or so bucks

I really gotta learn to do some of this shit my self.

Thats dirt cheap. It'd cost about $590 including tax at my shop. Gasket is $40 and Labor is 5.2 hours x $100/hour + $30 in sales tax.

***SMWS6TA*** · 09-21-2010, 10:35 AM

sure it isn't the front seal?

**98TransAmWs-6** · 09-21-2010, 10:55 AM

Isn't there a gasket in the drain plug too? Could it be that?

***SMWS6TA*** · 09-21-2010, 10:56 AM

no gasket...

**Cutlass** · 09-21-2010, 04:43 PM

Yes there is some sort of seal or gasket on the drain plug. When I first got my car, the oil drain plug was leaking because the seal was missing.

**INMY01TA** · 09-21-2010, 04:55 PM

It's most likely leaking where the timing cover meets the oil pan. Replace the timing cover gasket and run a bead of silicone gasket maker across the bottom of the timing cover. Would make a good winter project. Follow the instructions here, just skip the removing of the cam and valve springs etc. http://www.ls1howto.com/index.php?article=23