Neenjah

iTrader: (4)

I recently had a shop pull the motor and do an overhaul ony 99 Trans Am. Service Engine light was not on. After I got the car back I put about 250 miles on it and the SES ligth came on so I used Oreilleys code scanner and it coded bank 1 lean. Bank1 sensors 1 and 2 both read low voltage with separate codes. Curious as what would cause this on just one bank? Exhaust leak of some kind on that side? Did some searching and could not find anything on both sensors low voltage. Thanks

theMOSTWANTED

iTrader: (1)

Bad o2s maybe?

Neenjah

iTrader: (4)

yeah always a possibility, i mean its electronics.. i just never had an issue with it before the overhaul and now both, on the same side? just seems unlikely to me.

Zlow28

iTrader: (11)

try cleaning the MAF sensor.

Neenjah

iTrader: (4)

i pulled it off and sprayed it down with some crc maf cleaner.

so i saw some yellow **** in the top of the TB.. and i pulled it off. WHAT THE FUUUCCKKK

nomasterase

iTrader: (4)

that yellow junk is just what happens when you have condensation in your oil. caused easily by making short trips where the engine never fully warms up

Neenjah

iTrader: (4)

ive gathered that. It still does it even after a 40+ minute drive, if i take the oil cap off i could water a garden. and the dipstick has a tiny milky line on the tip.

Neenjah

iTrader: (4)

So just and update..

Coolant level is steady, not low at all and has stayed that way after several hundred miles.
There is moisture under the cap and a milky residue in the filler neck. The dipstick has milkshake on it and the dipstick tubes looks nasty inside of it.

Mechanic that did the overhaul said to drive it to 1000 miles and change the oil...

Doesnt seem like a good idea but I guess I will.

totalchaos

iTrader: (5)

Milkshake on the dipstick would worry me. Change the oil now and see if it milkshakes again. If it does i would think tou have a problem.

Neenjah

iTrader: (4)

I think something is wrong also. The first 200mi I put on it the dipstick got milkshake on it. I took it back and said what the heck. He flushed the engine and changed the oil and said drive it to 1000 miles. Now 200mi into it iv got milky dipstick

slow ride 02

Milky dipsticks are never good! I think that you have a serious problem. Such as leaking head gasket or worst case scenario cracked head or block. You could try some block seal? Or better yet take it back and have them pressure test it.

Neenjah

iTrader: (4)

i tool it back, hes going to go back through it and see whats up.

when i first took it to have the engine overhauled the milkshake was brownish/orangeish

now its just white. he thinks it may be some extreme condensation/pcv system problem


ill update when i know more

Zlow28

iTrader: (11)

Try this, open the radiator cap and have someone turn the car on. Check for any bubbles that float up in the coolant. If bubbles show up, you might have a blown headgasket.

slow ride 02

That fact that he had a milkshake dipstick before the overhaul scares the **** out of me! I am thinking cracked liner.

Neenjah

iTrader: (4)

heads were milled a thou but idk what he did to check the sleeves