car runs beter with maf off??!

[darrinevans253]

So I bougt a 90 laser a few months ago.. doesn't run right at all won't go anything over 3000 rpms.. but when I take the maf off it runs beter but still blows black smoke but still doesn't run like perfect... running way rich... and iv had it at a shop for a months and a half and they were way to damn lazy to try and fix it so I got the car back... and all the mec could say is that it was a sencer...... and iv done a boost leak test already.... any ideas??? Thx guys!

 

[DSM1G90]

Head out to a yard and grab another MAF from a busted up DSM for you need it badly to control your A/F mixture.

(and please, learn how to, capitalize and use punctuation for us to understand you better....read the rules please ..)

 

[marc97gst]

+1 on replacing the MAF, had the same issue a few months back.

 

[datbmac]

Just had this problem check the serial number on the ecu and make sure it is a 1990 ecu.

 

[darrinevans253]

Ya I used a diffrent maf and did the same thing....I will try and check the ecu and see if its diffrent

Good idea on that ecu man... I look at it and its from a damn wrecking yard... I gottatake it off and get the serial number

 

[DSM1G90]

ECU number would be: MD128625 for 49 Federal FWD Turbo 1990

 

[darrinevans253]

md128625 e2t34474 that's what was on the ecu and a junk yard sticker so I'm guessing its bad??

 

[mindset]

Pour a beer into your engine. That should help. Might make it chuckle a bit. But that'll get the job done.

 

[darrinevans253]

no can do... drank all my beer. Thanks for the help

 

[datbmac]

Yeah unless you want to take the ecu apart and check inside the case.

 

[Bishikid]

when my car did this, I bought another MAF, and replaced it and look what happened....
http://s306.photobucket.com/albums/nn251/2006pup/?action=view&current=enginemod059.mp4

<embed width="600" height="361" type="application/x-shockwave-flash" allowFullscreen="true" allowNetworking="all" wmode="transparent" src="http://static.photobucket.com/player.swf" flashvars="file=http%3A%2F%2Fvid306.photobucket.com%2Falbums%2Fnn251%2F2006pup%2Fenginemod059.mp4">

what ended up being my problem was, I needed a new o2 sensor.
then again the only reason I was able to cancel out the bad ecu possibility was because I sent it to ecmlink and had them service it a couple months before.

so either troubled ECU or bad O2 sensore is my bet.