Could a malfunctioning fpdm be causing my hard starting issue? I have inspected it and it appears ok. That is, it's not corroded or cracked or anything like that

 

Fuel pump driver module? I think it would work or not. Fuel filter lately? Do that and then test the fuel pressure..

 

It could be the FPDM but also could be lots of other things. Jethat suggested fuel filter which is a good start. Any codes? what kind of maintenance has been done? Might be time for plugs.

 

Have tried all that and more, everything you can think of. One mechanic I took it to thinks it might be the fuel pump starting to go out

 

You would be able to verify how the pump is working with a fuel pressure test..

 

well after exhaustive research and trying everything i cud think of, my parts guy suggested, and also someone on this site who's name escapes me, that it was a sticking fuel injector and voila, its starting like it was brand new again. thanks for the help everybody

 

Glad to hear it.

Fill us in on the details. How did you figure out which injector? Did you just begin replacing parts?

 

oh, sorry. I was periodically getting a code for #7 misfire. the guy who mentioned that it cud b a leaking injector was GLC by the way