Guest obx Posted September 30, 2014 Share Posted September 30, 2014 90 coupe,when engine warm,trying to accelerate from 35 mph to higher speed engine starts to buck and hesitate,runs fine low speed,checked computer code E044h is first to show up any suggestions,thanks ed Link to comment Share on other sites More sharing options...
Ronnie Posted September 30, 2014 Share Posted September 30, 2014 Are there any other codes? Link to comment Share on other sites More sharing options...
Guest Mc_Reatta Posted September 30, 2014 Share Posted September 30, 2014 Sure could be failing O2 sensor. Use diagnostics to monitor ED07 and ED18 to confirm if it is working properly or not.Lots of things can cause this though if it turns out not to be the O2 sensor. Link to comment Share on other sites More sharing options...
DAVES89 Posted September 30, 2014 Share Posted September 30, 2014 I would guess Mass Air Flow sensor... Link to comment Share on other sites More sharing options...
Ronnie Posted September 30, 2014 Share Posted September 30, 2014 It could be the O2 sensor but the thing is, the O2 sensor is saying the fuel mixture is lean which would cause engine hesitation and lack of power. The easy thing to do is change the sensor but I suspect there may be something else going on. That's the reason I asked if there are more codes that might give us more information about the problem. Link to comment Share on other sites More sharing options...
Guest obx Posted September 30, 2014 Share Posted September 30, 2014 also codes----b446,r026 and r061,thanks for the replies,ed Link to comment Share on other sites More sharing options...
Ronnie Posted September 30, 2014 Share Posted September 30, 2014 B446 is a low freon code. It won't effect engine operation. I'm not aware of any codes that start with an r or any 061 code. Could the r be an e? If you have an e026 code it is the quad driver fault that is one of the harder codes to troubleshoot. Here is information that will help you understand it: Code E026 Troubleshooting Link to comment Share on other sites More sharing options...
Guest Mc_Reatta Posted September 30, 2014 Share Posted September 30, 2014 Believe the r codes are for the SIR computer (Air Bag) 90/91 only.Diagnostics will help track this down if it isn't fuel delivery or secondary ignition system related. Still place to start. Free and easy. Link to comment Share on other sites More sharing options...
Guest ensign83 Posted October 1, 2014 Share Posted October 1, 2014 Plug wires Link to comment Share on other sites More sharing options...
2seater Posted October 1, 2014 Share Posted October 1, 2014 It sounds like a lack of fuel delivery to me with a plugged exhaust as a possible second choice. Link to comment Share on other sites More sharing options...
padgett Posted October 8, 2014 Share Posted October 8, 2014 Secondary ignition failure (coils, plug wires, plugs) will not set a code. Will usually show up under moderate load/ low rpm (like going over an overpass in lockup). Link to comment Share on other sites More sharing options...
Guest ensign83 Posted October 8, 2014 Share Posted October 8, 2014 Secondary ignition failure (coils, plug wires, plugs) will not set a code. Will usually show up under moderate load/ low rpm (like going over an overpass in lockup).true, that. gotta ck for the 'green goo'... Link to comment Share on other sites More sharing options...
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