NEED HELP DIAGNOSING/FIXING S-10 ENGINE PROBLEM.

I OWN A 1997 CHEV. S-10 ZR-2 WITH A 4.3 V-6 (85K MILES). FOR THE LAST 3 YEARS OR MORE I HAVE NOTICED A PROBLEM WITH HESITATION AT LOWER SPEEDS UPON LIGHT ACCELLERATION. THE PROBLEM SEEMS TO OCCUR MORE WHEN
IT IS COLD OUTSIDE (LIVE IN MICHIGAN) AND WHEN THE WEATHER IS DAMP/RAINY/FOGGY. THE PROBLEM ALSO SEEMS TO GO AWAY SLIGHTLY WHEN THE TRUCK HAS WARMED UP. MORE RECENTLY THE COIL WENT OUT, I THOUGHT REPLACING IT WOULD FIX THE PROBLEM I HAVE, ONLY NOW THE "SERVICE ENGINE SOON" LIGHT OCASSIONLY COMES ON. TRIED DIAGNOSIING IT WITH A COMPUTER TO NO AVAIL. I BELIEVE IT IS SOME SORT OF SENSOR PROBLEM, WHICH ONE IS BEYOND ME, AND DON’T WANT TO SPEND A FORTUNE HAVING A GM DEALER FIX ONLY TO FIND OUT IT WAS A $50 PART. ANY IDEAS? NEW FUEL FILTER AND CAT. CONVERTER IS OK.
--
Posted using the http://www.autoforumz.com interface, at author's request
Articles individually checked for conformance to usenet standards
  Click to see the full signature.
Add pictures here
βœ–
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
put some injection cleaner in the GAS TANK..
bushpig wrote:

Add pictures here
βœ–
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Relative to the "Service Engine Soon" light, I had the same problem with my '95 C1500 (4.3 liter). No hesitation, but often got the light when we had cool damp weather. From the time it had 50,000 miles through 100,000 miles when I traded it, cool damp weather seemed to affect something. Had it into the Chevy dealership twice and they were never able to get a code from the computer (luckily they didn't charge me since the truck wouldn't spit out an error code). Just learned to live with it.
message

http://www.autoforumz.com/Chevrolet-HELP-DIAGNOSING-FIXING-10-ENGINE-PROBLEM-ftopict105147.html
Add pictures here
βœ–
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
STOP YELLING AT US...........
--
Mad-Dog
'79 Chevy K-10
  Click to see the full signature.
Add pictures here
βœ–
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.