Performances issues with replacement fuel pumps.

[tomcat 74]

All, My question is, has any one had performance issues when they replaced their fuels pumps used in the Chevrolet Suburban? A friend of mine had his fuel pumps changed at a Chevrolet Dealer in Portland Oregon & his ZR1 has performance issues.

Tomcat 74

91 ZR1 #906

 

[90 Corvette ZR-1]

what seems to be the problem?

 

[Hib Halverson]

It's difficult to comment on this question as no symptoms were posted.

 

[tomcat 74]

It's difficult to comment on this question as no symptoms were posted.

The ZR1 is slugish & feel like it lack of power.

Tomcat74
91 ZR1 #906

 

[Hib Halverson]

Typically, if there is a fuel delivery issue, it will occure at WOT and high rpm.

Have you run the fuel pressure tests in the factory service manual?

Did you also replace the fuel filter?

Are any DTCs set?

Are the secondary port throttles working properly?