Engine/Transmission (1998.5 - 2002) did they fix the lift pump problem in the 03?

[Sageair]

Are they still having problems with the lift pumps in the 03's or did they fix them. If they did fix them is the fix retrofittable to our trucks?

 

[Joseph Donnelly]

not fixed. different, unreliable design, not directly retrofittable to the old, unreliable type

Glad I got a 12 valve with the reliable, mechanical lift pump Oo.

 

[radar doctor]

03 Lift Pumps

Have the 03 had any reported Lift Pump Troubles. Surely with over 15,000 Members there must be a few hundred 03 's driving around?/? How bout it Gang ? Any Pump troubles

 

[RSnaith]

Re: 03 Lift Pumps

Originally posted by radar doctor

Have the 03 had any reported Lift Pump Troubles. Surely with over 15,000 Members there must be a few hundred 03 's driving around?/? How bout it Gang ? Any Pump troubles

When my 03 was new, I was seeing about 9. 5 PSI at idle. Now its dropped to 8 PSI at idle. Putting high flow bolts in seems to have arrested the downward spiral. I need to get a flow meter on the system to check my flow, and see if I've lost anything.



One thing is fo sure though: To get into the high power numbers (500 - 550 HP), we'll need a new lift to ensure the low pressure side of the CP3 doesn't run out of fuel.