Truck losing power and service engine soon light on
1995 GMC Sonoma suddenly started losing power and service engine light on. Could feel engine not driving as fast on interstate and when approached stop light, truck started shaking and almost died it was idling so rough. Now hard to start with very rough idle.
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Re: Truck losing power and service engine soon light on
Like to other guy said, give it a tuneup. Also try SEAFOAM to clean carb up of slug. Also check to make sure the butter fly for the choke has not come loose, causing it the choke it down. Failed choke pull-off.
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My engine light in my 2002 GMC Sonoma has been on for the past four weeks. Yesterday I had an oil change done on my truck with a local mechanic. He turned the engine light off, but it came on soon after leaving his shop.
This morning I went to start my truck and there was NO power whatsoever. After repeatedly turning the key, I soon saw a slight movement on the battery display, but no lights would come on. It just seemed like it wasn't getting any power. I changed the battery two years ago, so it should be fine.
Eventually, the truck received full power and started, more less out of no where. It wouldn't hold an idle and would just die if i took my foot off the gas.
Hopefully someone has a solution for me.
First, you need to have it scanned for codes, then you will know what to look for. Dont replace anymore unneeded parts until you get a trouble code. you will need a OBD1 scanner. You will only know the cost and cause when you find the problem.
it sounds like you have a poor battery and a draw on your truck put a low amp clamp around the positive battery cable with the truck off and key removed from the truck for 10mins. then if you show more than 350mamps you have an excessive draw to find what is drawing the battery down start removing fuses starting with larger fuses until the amp clamp reads below 350mamps. then you know what circuit is causing the problem. check that the under hood light is turning off. common problem. good luck.