1985-1996 Fleetwood and Brougham Forum Discussion, Minor prob with my 91 FWB in Past Cadillac Vehicle Discussion; Last week I dropped an 87 L98 350 in place of the 305 in my 91 FWB. Anyway, car has ...
- 01-13-05 10:25 AM #1Awaiting Email Confirmation
- Automobile(s): '67 Cutlass,'92 Z28, '12 Crosstour, '12 Cube,00 GMC 4500
- Join Date
- Oct 2003
Minor prob with my 91 FWB
Last week I dropped an 87 L98 350 in place of the 305 in my 91 FWB. Anyway, car has been running great but it bucks and sputters the first few minutes after startup. I give it gas and it feels like it wants to stall and will even backfire a little. Problem goes away after a few minutes of driving but its still annoying. Timing seems right on so I'm thinking it may have something to do with the computer. Before I did the swap I was told to swap over to 350 injectors and a computer chip from a vechicle with TBI and 350. Parts store says injectors for the 305 and 350 are the same part number, would the computer be different?. I've been in the boneyards looking for a new computer chip but have been unable to do so thus far. Any idea what else it could be? Thanks in advance.
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- 01-13-05 02:59 PM #2Cadillac Owners Fanatic
- Automobile(s): 1974 fleetwood 75, 1980 sedan deville, 1970 eldo
- Join Date
- Sep 2004
- stillwater, ok
Re: Minor prob with my 91 FWB
hmm...we did this in my friends truck as well...I believe we changed the injectors in the TBI as well. Try a different parts store??? or maybe even go to a junk yard and get a TBI off of a Chevy truck....You will probably want it off of an 88-91 maybe a 92. They switched throttle bodies then and went to one that had two wing nuts to hold it on.
- 01-13-05 08:14 PM #3
Re: Minor prob with my 91 FWBOriginally Posted by sizanjdf