fish Posted December 23, 2009 Share Posted December 23, 2009 Hello, I have a 1998 GS 300. within the past week it has started running a little rough at statrtup when it is cold but went away after a few minutes. Today, after it was warm, it started missing badly on acceleration and also poping/backfiring from the engine; at the front of the car, not at the back from the exhaust. Sort of like what might happen with a cracked distributor on an older model car. it idles fine and seems to run well as long as O dont give it much acceleration. there is no check engine light on. I took it to advanced auto and got a code read which showed no codes. we tried to replicate it by advancing the throttle while parked and it seemed to run perfect. Once I left and the car was under load again, it did the same thing; missing and popping from the engine. Does anyone have any thoughts where to start? thank you very much for any ideas or suggestions anyone may have. Jody. Quote Link to comment Share on other sites More sharing options...
dcfish Posted December 23, 2009 Share Posted December 23, 2009 Hello,I have a 1998 GS 300. within the past week it has started running a little rough at statrtup when it is cold but went away after a few minutes. Today, after it was warm, it started missing badly on acceleration and also poping/backfiring from the engine; at the front of the car, not at the back from the exhaust. Sort of like what might happen with a cracked distributor on an older model car. it idles fine and seems to run well as long as O dont give it much acceleration. there is no check engine light on. I took it to advanced auto and got a code read which showed no codes. we tried to replicate it by advancing the throttle while parked and it seemed to run perfect. Once I left and the car was under load again, it did the same thing; missing and popping from the engine. Does anyone have any thoughts where to start? thank you very much for any ideas or suggestions anyone may have. Jody. Hey !!! I thought I was fish jk Could be an injector, Plug, Coil pack, Plug wires or even a bad ground from the battery to the frame. Any recent maintenance done ? Try reseting the ECU first of all. Remove the neg. battery terminal , Have a beer and replace. Keep us up to date on the outcome. Very difficult to diagnose over the web.... Quote Link to comment Share on other sites More sharing options...
boB_2006_GS300 Posted December 23, 2009 Share Posted December 23, 2009 If you don't work on it right away, at least get gas at another station on your next fill-up. It wouldn't hurt to rule out bad or contaminated gas. It happens! :( Quote Link to comment Share on other sites More sharing options...
fish Posted December 23, 2009 Author Share Posted December 23, 2009 thanks for the replies DCfish (my long lost brutha :) ) and Bob. I will try the gas and resetting the ECU and the beer. I will let you guys know as soon as I do, and will probably throw in some injector cleaner on the next tank. thanks again, fish Quote Link to comment Share on other sites More sharing options...
dcfish Posted December 23, 2009 Share Posted December 23, 2009 Let us know the results Merry Christmas !!! Quote Link to comment Share on other sites More sharing options...
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