3800 Swap Running - No Gauges (Page 1/1) Stricken DEC 17, 09:30 PM Got my 88 Formula 3800 swap going this week. After working out a few running issues with the engine, I'm moving on to my gauges. None work except the tach which cuts out intermittently and the voltmeter. The temp gauge does seem like it comes up to read just under 100° when it's all the way warmed up. Speedo, oil pressure, fuel level are all dead. The C203 connector was my first thought, but is fine from what I can tell. Fortunately, I am able to read all engine vitals with the Torque App, so the PCM is getting what it needs at least. Any thoughts on what to check? I am using Fieroflyer's harness for reference. Stricken DEC 17, 11:08 PM quote Originally posted by Stricken: Got my 88 Formula 3800 swap going this week. After working out a few running issues with the engine, I'm moving on to my gauges. None work except the tach which cuts out intermittently and the voltmeter. The temp gauge does seem like it comes up to read just under 100° when it's all the way warmed up. Speedo, oil pressure, fuel level are all dead. The C203 connector was my first thought, but is fine from what I can tell. Fortunately, I am able to read all engine vitals with the Torque App, so the PCM is getting what it needs at least. Any thoughts on what to check? I am using Fieroflyer's harness for reference. Also, the check engine light does work as I was initially getting a MAF code from a bad MAF.