Bad intermittent idle and killing ignition module s

Asked by Azza164 Nov 15, 2016 at 09:47 AM about the 1993 Chevrolet S-10

Question type: Maintenance & Repair

I have replaced every sensor on the w code engine
and rebuilt the distributor replaced coil and cap
and rotor wires and plugs. Sometimes it starts and
runs fine other times it runs rough and dies, after 2
or 3 times cutting out its runs great. On top of all
that it seems to be killing ignition control module s
now. Runs great for 2 weeks then turn it off and
then NO spark! It's driving me nuts! Any ideas? S10
4 x4 93 w code cpi

4 Answers

180

If the ignition system is working properly and everything is fine with it, check the the delivery system. A bad fuel pump, restricted lines, or improper voltage to the fuel pump module could cause the rough idle and stalling on acceleration

Forgot to mention, it has a new delco spider injection system pump relay s and filters too. Pressure is around 60 psi regardless if it runs fine or stumbles and dies

Maybe I have a overcharging alternator causing ignition problems, will put another module in then test the system. Could be my control module problem?

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