akwilks
Mr. Keith
My 93 Typhoon has a 3bar chip which was recently installed along with a 3bar map....what happens is I will use FreeScan to check whats going on and notice the following thing; When the engine runs, out of the blue she starts backfiring and it seems as though I'm not getting any timing....mash the gas, backfire, no power....the engine light flickers on and off once then I experience the aforementioned problems...the FreeScan loses all communication with the ecm. So this is what I have......Engine light flickers, FreeScan stops talking to ecm, engine will idle but will not respond to any load other than by backfiring....barring any obstacles like hills, I can get the truck home travelling 15-20 mph tops...Otherwise she runs great....I dont want to ditch the chip unless I have to but if its not throwing any codes and the 2bar chip that used to be in the ecm never did this....so where do I start looking....Its hard driving a truck you love that gets you there but may not get you back.....thanks for any help
