Rough idle low power

DWALDEN71

MEMBER
2000 CHEVROLET S-10
2.2L
4 CYL
2WD
AUTOMATIC
150,000 MILES

About a month ago I went through the car wash and my truck starting running rough after an hour or so it was fine. Then yesterday I went through a creek over a road and it started the rough idle and low power and never quit. I replaced the plugs plug wires and both coil packs still running rough with no power.

Thursday, July 23rd, 2020 AT 4:58 PM

3 Replies

JACOBANDNICKOLAS

MECHANIC
110,176 POSTS

Hi,

There are a few different ignition components that could have gotten wet. If you haven't already, the computer should be scanned to see where the problem is coming from. Here is a quick video showing how it's done:

https://youtu.be/b2IJGfImVvw

I realize most people don't own a scan tool, but most parts stores will do it free of charge or lend/rent the scan tool to you.

If you haven't done it, start with this. If you have, let me know what codes were retrieved.

Let me know.
Joe

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Thursday, July 23rd, 2020 AT 9:07 PM

DWALDEN71

MEMBER
2 POSTS

Took the truck had it scanned there was no codes except p1670 and it had something to do with the transmission.

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Saturday, July 25th, 2020 AT 9:48 AM

JACOBANDNICKOLAS

MECHANIC
110,176 POSTS

The only other thing I can think of then is if the engine took on water which caused something to happen directly to the engine. You may want to do a compression test to confirm that all cylinders are within spec. If it was something electronic, it would have shown up with the scan.

https://www.2carpros.com/articles/how-to-test-engine-compression

Joe

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Saturday, July 25th, 2020 AT 10:05 PM