Question about Cars & Trucks
I have a 1988 chevy s10 blazer that is having power surges, diagnostics showed it was the ignition modulator. replace that but still doing the same thing. battery and alt. test good. It starts up but when driving it, it seem to surge more when i press down on the accelerator?
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Posted on Jan 02, 2017
the problem is common for the 93-94-95 4.3 vortex its the spider injection located inside the plenum the part costs between $250 to 400 i had to replace on girlfreinds 94 blazer. ifound one o ebay for $100
Posted on Nov 06, 2008
If this engine is a VORTEC then you may have a problem with the internal fuel system. Under the top plenum there is a fuel reg and poppet valves that inject fuel into the cylinders. Sometimes the tubes that run fuel from the reg to the valves can leak and cause your problem. This cannot be found with pressure check because this occurrs after the reg. PS fuel mileage will go down. Let me know if this helps.Moe
Posted on May 26, 2009
Your vehicle as an ignition control module located on top of the distributor (under the cap and rotor) I would pull the ICM and take it to NAPA and have it tested if bad replace it (cost about $80). Sounds like a ICM problem or it could be the ignition switch located on the steering coloum which can't be tested but costs $20. Hope this works
Posted on Jul 16, 2009
How is it running before it quits onyou. This could be the culprit of an egr valve. How many miles on thevehicle. The egr seems to die on a certain mileage pattern. Also youcould start by cleaning the egr valve before replacing it. This couldvery well help the situation, but this is just a guess. Hope thishelps!!
Posted on Nov 28, 2009
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