Can the ignition control module on a 1997 Chevy S-10 be tested on a testor , be passed as OK and still be failing when installed on the engine?


Asked by Oct 04, 2014 at 05:10 PM about the 1997 Chevrolet S-10 2 Dr LS 4WD Extended Cab SB

Question type: Maintenance & Repair

Truck would  start, but would not run when throttle was opened.  Replaced fuel pump, Pressure regulator,and filter.  It started right up, responded to throttle just fine, and I took it out for a test run.  2.5 miles down the road, it died and when I started it again, it would not accept throttle and died again. I started it again with the same results.  Towed it home, disconnected the fuel line at the filter, checked filter and fuel line for obstructions and found everything open.  Fuel pump comes on and engine starts but will not accept throttle.  apparently, something is interfering with the fuel pump continuing to run causing inadequet fuel pressure. Checked the pump relay, but the relay is fine. I suspect the ICM, so I had it tested.  I think the tester briefly indicated a failure but then moved on to the passed position.  Can the ICM be passed as OK and still fail when installed on the engine?

2 Answers


Do you have a check engine light on? If so the code stored would be the best place to start with diagnosis. To answer your question about the module is yes it can test good, run for a little while then go bad, but you have to catch it during failure to be100 percent certain.


Another thing to check is the mixture of Air/Gas Ratio and or Vacuum Leaks can cause it to Bog Down. Let us know what you find, ok?

Your Answer

Add photo

Related Questions

Search Chevrolet S-10 Questions

Chevrolet S-10 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 1,970
#2 John Saffrahn
John Saffrahn
Reputation 890
#3 Trebor66
Reputation 840
View All

Related Models For Sale

Used Ford Ranger"
266 Great Deals out of 7,708 listings starting at $988
Used GMC Sonoma"
7 Great Deals out of 589 listings starting at $1,799
Used Toyota Tacoma"
626 Great Deals out of 30,504 listings starting at $2,850
Used Ford F-150"
3,271 Great Deals out of 216,650 listings starting at $1,500
Used Dodge Dakota"
161 Great Deals out of 4,799 listings starting at $900
Used Chevrolet Blazer"
1,648 listings starting at $1,999
Used Nissan Frontier"
431 Great Deals out of 20,761 listings starting at $2,500
Used GMC Sierra 1500"
1,029 Great Deals out of 56,923 listings starting at $2,300
Used Dodge Ram 1500"
520 Great Deals out of 13,739 listings starting at $995
Used Chevrolet C/K 1500"
1,138 listings starting at $2,400
Used Jeep Wrangler"
464 Great Deals out of 16,413 listings starting at $3,400