1988 where is the ac relay.

most relays for this are under the hood in the fuse box it is usually on the pass side just on the wheel well could be on drivers side also but it should be there ,

Have you checked the ac system to see if it is full of freon, and the fan relays ?

check all ur fuses for continuity first, then u can also try to swap out ur fuel pump relay with another relay that looks jus like it, be sure to use a relay like for ur horn or ac relay something that wont affect necessary or direct engine circuits like for ex. an ecm fuse or bcm fuse. if fuses r good an swappin relays wont work, next is to trace bak from fuel pump ur wires an possibly keep back probing to see if u have a broken wire from relay box to pump . good luck hope this was helpful . in ur fusebox ur fuelpump fuse should b labeled or easily found in fuse box legend, most likely on bak of fusebox cover....

It's possible. Relays can and do go bad after a while, when the electrical contacts get pitted, and then the connection becomes unreliable. On many cars the relays are similar to each other. Try swapping the fuel pump relay with an AC or cooling fan or other relay, and see if the problem clears up.

there are relays

There are actually 3 behind the battery and the fire wall. 1- Fuel relay switch. 2- AC relay control switch. 3- OVP Over voltage protection relay switch. They all have labels. To replace, just pull them upward. To have an easy access, remove the ECM unit blocking access first, then put it back after you replace the relay switch.

an easy way to tell is that when you take the headlight relay out, all the headlights should go out as well. So try them one at a time. The other ones would be the turn signal flasher, fuel pump relay, emergency flasher, and AC relay.

honestly if your vehicles temperature is stayin in an acceptable range its fine.. if the fan quits kicking on you have problems... unless you are looking for a higher performance vehicle.. but running your engine at a higher temperature requires many modifications, down to the length of your spark plugs.. because if too long or short in comparison to your enine temp the oil may not burn off and will cause the plugs to foul out..

check inside master fuse box under hood if not there look around the area of the condenser.

It's low on freon