Replaced plugs fuel injectors and egr valve as well. But code returns. Engine wont start. I believe all started from someone contaminated gas. Drained and treated and replaced filter as well
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1996 GMC Sonoma Question: Ireplaced the map sensor but I still get code saying hi voltage map sensor. Rep
Answer #1pushrod January 15, 2014, 13:44Master
Check for spark at the plugs and fuel pressure.
Replyoutlaw74.mj, January 15, 2014, 13:55Rookie
Yes replaced plugs and have fire. How to test fuel pressure inside tank. We have plenty of pressure visually big amount in degrees indeterminate
Replypushrod, January 15, 2014, 14:02Master
There should be a pressue test port at the engine. Maybe it still has whatever in the tank! What was in it, water??? Did you remove the tank to clean it out?
Answer #2ziptie12 January 15, 2014, 16:16Master
Inspect wiring to map sensor for rodent or other kind of damage.