CHEVY S10 STALLS WHEN DECELERATING

1993 Chevrolet S-10

Tiny

FA5

October, 20, 2009 AT 3:04 PM

Engine Mechanical problem
1993 Chevy S-10 6 cyl Four Wheel Drive Manual 140000 miles

The truck will stall when decertating or wen the revs drop after reving it up a little. Will not start right back, takes a couple minutes. When it does start back it idles fine for atleast 10 minutes ten it will stall. What could it be?

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7 Answers

Tiny

rasmataz

October, 20, 2009 AT 3:07 PM

Check and test the idle air control valve and EGR valve and TPS/MAP sensors.

Tiny

FA5

October, 21, 2009 AT 2:07 PM

Checked the EGR valve seemed ok, also changed the map and still nothing, the check engine light isnt on.

Tiny

rasmataz

October, 21, 2009 AT 3:34 PM

Time to verify the fuel pressure -use a fuel pressure gauge and check if its within specs-fuel pump could be getting weak

Tiny

FA5

October, 24, 2009 AT 4:03 PM

Well I went and rented a tool that reads codes and got 16 codes at first but now its not even reading, I got a code for the EGR, MAP sensor and some other solinoids. I really think its the EGR, in the service book it said if the egr is bad the truck will stall when decelerating or after it idles. My dad seems to think its the computer, ECM I guess.

Tiny

rasmataz

October, 24, 2009 AT 4:07 PM

Clean out the idle air control valve and test the TPS and MAP sensors and see what happens.

Tiny

FA5

November, 8, 2009 AT 5:41 PM

Welll we replacd the EGR, Idle air control valve and the TPS was changed today. After the tps was installed it ran for the longest its ran for since it broke down. He was about to drive off so I put on the air cleaner dropped the hood, he then rev'd it up a lil and it died. I also just cleaned the airfilter. He had 2 extra MAP's but still nothing change. Could it be the uel pressure regulator? Also if the ECM was bad would it even start up? Runing out of cash, time and ideas. Thanks.

Tiny

TotalS10Guy

December, 2, 2009 AT 11:28 PM

Check the knock sensor

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