THERE IS 4 RELAYS ON THE FIREWALL SURELY IT IS ONE OF THOSE ! WICH ONE ?SHOULD I JUST TRY TRACING WIRES OR IS THIS IN A SPECIFIC ?I WANT TO JUMP WIRES TO TEST SYSTEM IF I KNEW WICH I COULD PULL RELAY ON BTM DIAGRM SHOWS CONT JUMP THERE I JUST WANT TO RUN ALL THE TIME CAR HAS ALWAYS RAN A LITTLE HIGH IN LOUISIANA A LITTLE TO HOT CAN BE BAD BAD FAN HARDLY COMES ON GETS TOO HOT RUNS THEN SHUTS OFF
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You have fuses and relays . The fuses are or should br labled inside each cover if still there as well as on the fuse block itself, If not I can look under the hood of mine and tell you. The relays from left to right thats passenger to driver and numbered including the empty spaces as mine hase three on the right and two on the left with three emty slots in between. Now Olds seems to have kept this araingement for some time also my '98 88 has ABS as part of TCS but no relays there and diferent climate controls over the years it is posible you have more or less than are presnt on mine the complete list is as follows
#1 - AC compressor control for the compressors clutch
#2 - Horn relay
#3 - AC blower fan motor on, at low speed on the '98
#4 - AC blower motor off or high speed depending on year, not present on my "98
#5 - ABS pump relay ,not present on my '98
#6 - ABS Main relay also labled as pump relay for some years, not present on '98
#7 - High speed cooling or radiator fan
#8 - Low speed cooling or radiator fan
The fog lamp relay on a 1999 Olds 88 is in the fuse and relay panel on the passenger side 'kick panel' - the side wall just forward of the door. It is Relay "A" , the lowest relay just to the right of the fuses. You first must lower or remove the under dash board cover that is under the glove box closest to the firewall. Relay pulls straight out but requires some gentle rocking sideways back and forth to get it to loosen up. Relays in this panel are not keyed and can be put in backwards: notice or mark which way is up before you pull it out. The Owner's Manual lists the relays' functions by letter position but no diagram: you have to look at the relay sockets on the panel.
The engine temp sensor sends a signal to the computer and the computer grounds the fan relay when it is needed. I'm showing 6 relays on the firewall under the windshield. The two on the right side are high and low radiator fan relays.
check the fuses and relays for the fan under the bonnet in the main fuse box, try switching them around with another relay or fuse just to test out, if you still cant get anything use a test light or multi meter to check the wires going into the fan for continuity or voltage. follow the wires along to battery to check for breakages in it and connectivity on terminal.
98 olds 88 as posted under , blower relay is located on rear upper firewall there is a strip of relays , picture shows it to be the 1 closest to the passenger side ... try smacking it with something like a screwdriver handle , see if it goes off ... johnny