Just picked up my car from moms house where it was stored since april. went back occasionally during that period and started it and it ran fine UNTIL -- this time when I went to start it, was very rough until it got to op temp. and when I drove it back on the road, anything more than a few millimeters of throttle and it would stumble badly. luckily that few mm was good to about 75 mph which got me from buffalo to hartford ok.

I replaced the TPS and checked the timing which seemed ok. I also ran 2 tankfulls of 94 through it just incase the gas went bad. I got codes 33 and 34 on the trip back which forced limp home mode but both came when I was coasting into the gas station or a toll booth (very lucky). I think this may have something to do with the new TPS sensor only being held on the throttle body by one screw (other one stripped backing it out).

I was thinking that the injectors might be going bad or baddly clogged (origionals). BTW I can floor it and she runs great. and when I forced the ecm into field service mode it indicated a VERY lean condition when the stumbles (and just about any acceleration) occured. the ses that usually blinks on off once a second wouldent even light at all when I was accelerating but would show stoichiometric at idle or when cruising.

fuel pump is brand new walbro 255
havent changed fuel filter -- will do.
havent changed MAF but I couldent find a place that sells the old wells su145's anymore. autozone doesnt carry ???

all help appriciated.

 

Codes 33 and 34 refer to Vacuum.....and you mentioned being "lean" also. I would check/replace ALL vacuum hoses, check the runner bolts/gaskets. Id say you have a cracked vacuum line somewhere....or maybe more than one. My car did that after sitting for a while.....HTH....

 

yeah -- that makes sense -- will do.