Hi all,
1991 Escudo Nomade 4-door 4wd long wheel base, 1600 SOHC 16-valve injected 5-speed manual.
Please refer to photo below, can anyone tell me what this plug does and why when I push the plug down it causes the engine rev's to increase, then when the plug is just pulled back (NOT unclipped/unplugged) it reduces the rev's to what sounds normal)?
It comes off loom that goes to the TPS so obviously something to do with the throttle but is anyone able to advise exactly what it does and what would be causing this weird issue I'm having?