Replace the oil pressure sending unit for your 1990-93 Mustang. The oil pressure sending unit is located on the left side of the engine above the Oil Filter and sends oil pressure readings to the oil pressure gauge. If this goes out you will be missing a vital sign from your engine bay!
I would like to give a big thank you to Latemodel Resto Employee Tyler Rodriguez, he went above and beyond to provide outstanding Customer service, really made me a customer for life, i plan to make all my future purchases from latemodelresto when i get my hands on a 2015 Mustang. thanks again Tyler for the outstanding customer service you and latemodelresto provide.