Having problems with your 1993 GMC Sonoma Club ?

2.2 litre 1995 gmc sonoma idles rough no trouble code. found hole i brake booster vaccum line fixed that. replaced and changed fuel filter, idle air control valve, got spark at coil packs, put new spark plug wires and plugs in, was back firing internal when cold out underload uphill usually and push hard on the accelarator. has quit backfiring. upper intake filthy Did several sea foam cleanings. just stumped. has got better but still putt putt putts while idling. could a egr valve that i replace

Posted / edited by AnonymousUser on : 10-12-2018

Answers :

Repair Help & Product Troubleshooting for 1993 GMC Sonoma Club

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