Ideas on S-10 troubles
The basics: 86 4wd S-10 with a 2.8 V-6 with a TBI.
Problem: On a hot day after starting truck it seems to open the EGR all the way which in turn causes truck to idle rough or not at all. Sometimes it stays like this even after motor has been ran for a while and other times it quits after 15 min. of driving. On the cooler days there is no problem at anytime. Tested EGR valve and solonoid according to the limited information in the Haynes and Chilton manuals and it comes up good. Have recently replaced the MAP, Air valve and TPS to fix some other problems it had.
Any ideas on what to look for? Thanks for any help.
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