Thread: no oil pressure when hot unless on the gas

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i have an 88 camaro with a 2.8 i know camaro really shouldnt have a v 6. well back to the question. when i start it the oil pressure is about 80 then after about 5 mins. it goes to 20 the farther you go the more it drops pretty soon you have to hit the gas all the time to have any oil pressure what could be the problem i think it is the oil pump but i dont know really hopefully someone will know for sure.

Originally posted by mongooseschwinn
i have an 88 camaro with a 2.8 i know camaro really shouldnt have a v 6. well back to the question. when i start it the oil pressure is about 80 then after about 5 mins. it goes to 20 the farther you go the more it drops pretty soon you have to hit the gas all the time to have any oil pressure what could be the problem i think it is the oil pump but i dont know really hopefully someone will know for sure.

nobody can tell you for sure what it is. if its a high mileage car then its probably normal ware and tare. it could be the oil pump but wouldn't be worth it just putting a pump in it with the rest of the motor wore out. put you a heavy weight oil in it and see if that helps for awhile.

i guess i should have mentioned this in the first place i had the engine rebulit 10,000 miles ago

Originally posted by mongooseschwinn
i guess i should have mentioned this in the first place i had the engine rebulit 10,000 miles ago

that do kinda put a dif. light on the subj. but still it could be anything. it could very well be the pump, but there is on way to be 100% sure that i know of, but to put a pump in and see what happens. being rebuilt 10,000 miles ago makes it harder to diagnose, because it could be something they did that we wouldnt know about. its easer to diagnose a hi mileage motor than a rebuilt one.

i just dont want to spend anymore money then i have to i dont understand what is up with the car it was running great up untill two months ago. the good news is i havent heard any noise yet from it but it is harder to get up to speed when it drops. untill you get up passed 3 grand.

Originally posted by mongooseschwinn
i just dont want to spend anymore money then i have to i dont understand what is up with the car it was running great up untill two months ago. the good news is i havent heard any noise yet from it but it is harder to get up to speed when it drops. untill you get up passed 3 grand.

i know, but its just no way that anybody here can tell you for sure what it is. i never understood why GM would put that little motor in that car, just blows my mine. if you are loosing power because of no oil then something is fixing to lock up. you need to find out what it is.

i should have never bought the car but now that i have it i kinda feel in love with it so i would like to get this problem sovled maybe i will just swap it with a new motor and this time a 350 with 350 turbo tranny instead of the 700r i am having problems with the car shifting but mu buddy said it could be cause by the oil pressure well hope to hear some more on what to do. mongoose.

sounds to me like you have a high oil temp....alot of upper cylinder friction can cause this as well as a loose fit lower end...first I would check pressure with another guage....if your going off the dash mounted gauge I would replace the sender unit.....

Are you using good oil or cheap oil..... differnt brands of oil do tend to differ heat better than others.....

Well, if your due for an oil change, theres an Easy way to find out if its due to you cooking your oil. Grab a bottle of STP oil stabilizer. Available at your local advanced auto and Family Dollar. Blue bottle, $2.50. Add it to your oil when the car is warm. If ou notice an immediate increase in oil pressure, its probably your oil is thinned out. if you notice a slight or No increase in oil pressure, you either have a flow blockage or a bad pump. Hope this helps

As for the 700R, its a possiblity. You may want to check your tranny cooler. If your motor sems especially sluggish, chances are your shifting is due to inability to gain pressure in you tranny pump. This will cause erratic and delayed shifting. If you find your tranny cooler lines are especially warm, this may be an indicator of improper flow. Also something to look for.

well something new happend tonight i took it out and i was driving along the oil pressure droped so i hit the gas and lifters started to rattle so i have the car parked untill i can get the problem fixed. i hope something else didnt get damage in my mistake.