Hello, I have a 1990 oldsmobile regency brougham 88......I am questioning what the instruments are on the gauge area......there are 3 to the left of speedometer and I do not know what they are.......

Here you go copy and past then click on the first picture. It's number 5. https://www.google.com/search?client=ms-android-americamovil-us&ei=59KZWYn7DcPymQG4yoOIDw&q=1987+oldsmobile+delta+88+royale+brougham+map+sensor+location&oq=1987+oldsmobile+delta+88+royale+brougham+map+sensor+location&gs_l=mobile-gws-serp.3...4920.20339.0.21667.21.21.0.0.0.0.406.5585.0j1j16j2j1.20.0....0...1.1j4.64.mobile-gws-serp..1.17.4932...0j0i22i30k1j33i22i29i30k1j33i160k1j33i21k1.dB-spKCclH4

I have be unable to locate a diagram for free, however the owners manual is available on eBay, here is the link to the auction site. 1988 ORIGINAL OLDSMOBILE OLDS DELTA 88 98 REGENCY OWNERS MANUAL SERVICE...

have you checked the connections? Make sure they are fully secured.

-4 Gallons ...? Sounds like too much. You mean 4 Qtr..?

But any way. Don't expect the same amount that you pour in. because due to trap some in the filter, possibly the engine already
burn some and may be some leak.


Good Luck


Mai

Most likely the float in the tank is stuck. You'll need to pull the fuel pump out and fix the float.

You need the sensors of those functions, which you don't have installed. I would go back to the correct part.

if you are not experienced mech. maybe you should take it to one

follow the ground from your battery should locate them

It goes from the -side battery to the engine and is called the negitive battery cable.

I have the same problem did you ever figure it out.