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Yea it could definitely be your pump. The Walbro will jack it up a few psi.
I know a bunch of cats who throw in the new pump thinking it is the best option and don't even realize its a higher capacity pump and you NEED a regulator to fix it. That would make you run rich.
Also try swapping that temp sensor out with a usdm one, see how it runs after that. Can't hurt and its pretty quick fix. Be sure and use allot of teflon or rtv and let it set up before starting the car with that sensor. The wrong coolant sensor would also cause the problems you are describing. Either way once you fix it it is going to run like a bat outta hell.
Sounds like whoever had the car before you probably didn't know what he was getting into, so I wouldn't trust anything, make sure everything is set up properly..
GL
Dudeman
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91 ve
Current: 3inch vrs/ws2, ssac, n1's,b14tranny, lm-1,calum realtime, n60maf,shortened konis/gc's, nx brakes, shortshifter, fstb, progress rearsway, solid mounts.
Last edited by Dudeman258 : 05-03-2008 at 02:09 AM.
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