Originally Posted by Torque454
Just learned that there is no MAF on this truck. It uses a Manifold Absolute Pressure (MAP) sensor instead. Still wondering if that could cause the problem tho.
1988 was the last year the Rangers got single plug heads with the earlier EFI... If it's a dual plug, it's had a swap. it can be done sucessfully but it sounds, there is an issue. I would check the wiring. sounds like it's not sensing crankshaft revolution