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87 760 turbo bucking at 1500 - 2000 rpms intermittant 700

posted by  ejray on  Tue Mar 15 08:13 CST 2011
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last visit: Tue Mar 19 21:05 CST 2013
[RELATED]

My 87 760 turbo started bucking at cruize speed the other day. The Tach goes from 2500 RPM to 1000 then back up. If I stomp on the gas it'll hessitate and then straighten out and drive OK for a while. It does not "hessitate and die " when all this is goign on. I can baby it at between 1000 - 1500 RPM ( 20 mph) and get it home. SO far Ive replaced fuel filter, AMM and air temperature valve. I've been reading FAQ. It talks about fuel pump regulator, a soft turbo hose and possibly the pre fuel pump in teh gas tank. I'm reluctant to fill the tank and see if it drives OK with a full tank, cause if it does, then I have a full tank of 12 gallons of gas to deal with when swaping out that tank fuel pump. Any comments on my my next step should be?

Thanks in advance for any info





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