94 Z28 issues...

alrighty...
my camaro is a great running car, purrs like one angry kitty... but i have one issue which is making my life difficult...
when i started up the maro.. obviously it was cold.. and my oil pressure gauge was right in the middle at idle... no problems so far... because my camaro had a dead battery i was giving it some gas, then letting it idle for a bit and just doing an overall check...
the car was running for about a half hour and after a few revvs, the oil pressure gauge was hovering just above the 0 at idle, and when i gave it some gas it would go up one notch and then when i let off, it would go right back to just above 0
now.. as i'm in the car revving it through this time.. i see the needle slowly go lower and lower with every rev
the only thing i can think of (with limited knowledge) is an oil pump going bad or a head gasket.... again.. that is with very limited knowledge

any help would be greatly appreciated
thanks,
TJ

:banghead:

alrighty...
my camaro is a great running car, purrs like one angry kitty... but i have one issue which is making my life difficult...
when i started up the maro.. obviously it was cold.. and my oil pressure gauge was right in the middle at idle... no problems so far... because my camaro had a dead battery i was giving it some gas, then letting it idle for a bit and just doing an overall check...
the car was running for about a half hour and after a few revvs, the oil pressure gauge was hovering just above the 0 at idle, and when i gave it some gas it would go up one notch and then when i let off, it would go right back to just above 0
now.. as i'm in the car revving it through this time.. i see the needle slowly go lower and lower with every rev
the only thing i can think of (with limited knowledge) is an oil pump going bad or a head gasket.... again.. that is with very limited knowledge

any help would be greatly appreciated
thanks,
TJ

:banghead:




I'll go with a bad oil pump first plus its a 13 year old car a new pump can help him a lot plus its cheap I bougt one in a local autoparts and it cost 30 something dolars

I'll go with a bad oil pump first plus its a 13 year old car a new pump can help him a lot plus its cheap I bougt one in a local autoparts and it cost 30 something dolars

thanks, i have to wait until about may before work can start (semester at college) so i'm trying to figure out the problem now, so I can get it taken care of for summer

the oil pump its really easy to change it took me a few hours to do it you just have to raise the engine a few inches and remove the cran cover and there you find the pump

the oil pump its really easy to change it took me a few hours to do it you just have to raise the engine a few inches and remove the cran cover and there you find the pump

it's good to know that it can be done on a lazy sunday afternoon...

i went out today and i had the same issue with the car... when it warmed up (a half hour later) the oil pressure hovered just above the 0 at idle and went up when revved to about the first notch, then goes right back down to just above the 0.... now... i also noticed that the heat gauge was slowly inching it's way up into the danger zone

easy first check the oil cap on the valve cover, if it looks like cofee color you problaly have mixed oil and water, that a f...... up engine, but dont go so far when the car its cold remove the radiator cap and star the engine if the water goes out of the radiator you should have a bad head gasket and if you say that the temperature goes up the gasket sould be the problem, I'll sugest you to stop using the car until you found out what is it cuz if keep overheading it or running it with out the sugestet oil pressure you could lose your engine and it will not be cheap to rebuild it

easy first check the oil cap on the valve cover, if it looks like cofee color you problaly have mixed oil and water, that a f...... up engine, but dont go so far when the car its cold remove the radiator cap and star the engine if the water goes out of the radiator you should have a bad head gasket and if you say that the temperature goes up the gasket sould be the problem, I'll sugest you to stop using the car until you found out what is it cuz if keep overheading it or running it with out the sugestet oil pressure you could lose your engine and it will not be cheap to rebuild it

well.. i can't drive it around anyways because i dont get my license back until april, so driving it is no issue, and i'm gunna go look and try those both and see where it stands

easy first check the oil cap on the valve cover, if it looks like cofee color you problaly have mixed oil and water, that a f...... up engine, but dont go so far when the car its cold remove the radiator cap and star the engine if the water goes out of the radiator you should have a bad head gasket and if you say that the temperature goes up the gasket sould be the problem, I'll sugest you to stop using the car until you found out what is it cuz if keep overheading it or running it with out the sugestet oil pressure you could lose your engine and it will not be cheap to rebuild it

ok.. i checked the oil cap.. and it's perfect... still looks almost new (and i know for a fact it's never been replaced) so no water in with the oil...
now.. the radiator cap doesn't want to come off, so i tried pullin off the cap to where you add coolant and there was nothing there... do i need to pull off the cap right on the radiator? because that rat bastard did NOT want to come off...

ok.. i checked the oil cap.. and it's perfect... still looks almost new (and i know for a fact it's never been replaced) so no water in with the oil...
now.. the radiator cap doesn't want to come off, so i tried pullin off the cap to where you add coolant and there was nothing there... do i need to pull off the cap right on the radiator? because that rat bastard did NOT want to come off...

when i say there's nothing there, i mean nothing came shooting out:banghead:

thats right you have to take the cap out, with the car cold force the cap down, and twist it to the left, it has to come out but dont do it if the engine has been running

thats right you have to take the cap out, with the car cold force the cap down, and twist it to the left, it has to come out but dont do it if the engine has been running

alrighty.. i'm gunna go do that right now

nope.. nothing came shooting out... thing was full of radiator fluid too... so that's a good thing.. lol

nope.. nothing came shooting out... thing was full of radiator fluid too... so that's a good thing.. lol

also the radiator fluid looked great... no oil in it ( i was told to look for oil in the radiator fluid also by a buddy.. just to make sure)

nothing else comes to my mind man ill do some more research and ill let u know good luck

nothing else comes to my mind man ill do some more research and ill let u know good luck

hey man, i greatly appreciate the help... i got time on my side, so that's a good thing.. lol

and just to be sure.. we have narrowed it down to the oil pump.. right?

im almost 100 % sure that thats is the problem but just to be sure ask at any auto repair shop and what they tell you

im almost 100 % sure that thats is the problem but just to be sure ask at any auto repair shop and what they tell you

i appreciate the help big time... i have posted all the info up on the camaroz28 forum as well... just because it's a centralized camaro site, and they're all camaro, so if and when they concur i'll be alllllll set... and for the time being, i am giddy that it's something that can be that easily fixed.. i was just hoping to god it would be.. lol

thanks man... biggie style.. lol

can you not get a mechanical gage to tap into the block at sensor just to verify that pressure is indeed down and maybe not a bad pump? Maybe it`s the sensor itself ??

can you not get a mechanical gage to tap into the block at sensor just to verify that pressure is indeed down and maybe not a bad pump? Maybe it`s the sensor itself ??

how can i get my hands on one?

how can i get my hands on one?autozone loan -a -toool -service. or a freindly mechanic:grinyes:

autozone loan -a -toool -service. or a freindly mechanic:grinyes:

appreciate it... happy to know that the lend-a-tool service will have it.. lol

so far i have it narrowed down to these possible issues...
oil sending unit located either at the back of the block or on the driver side behind the manifold
oil pump
i can't remember what it's called, but there's some pipe that's apparently known to break off in the oil pan
or the worst possible situation... bad bearing(s)

only reason why i think it may be the sending unit/pump combo is because the temperature seems to rise some (over half-way mark is a little hairy to me) and of course i'm hoping to god i wont have to do the tear down to change bearings

and going with the bad gauge thought... i heard that on the LT1, when the motor warms up, that particular sensor tend to read wrong, especially on higher mileage motors (mine has 123K)