hello again, been gone for awhile with school.

finally getting around to trying to fix my fuel delivery issues on the 3VZE...been running around with Mr. Brown's "FP to B+" jumper for over 6 months now, maybe a year? can't recall.

anyways, even with the jumper, the engine sometimes won't start, and sometimes it dies on me. kinda sucks when it does that on the freeway.

so i think i am gonna invest in a new circuit opening relay, see if that does the trick? the black relay that i found down by the ECU, near the passenger speaker in the kick panel has the following part number: 90987-04002

stealer says it is $24.95 but can't [won't?] tell me whether it is the co relay or what...can anyone confirm that part number for me?

alternatively, if the "FP to B+" jumper should make the fuel pump run without the relay, then there's no point in swapping the relay, right? so if that's true, then why does the engine sometimes act like the jumper ain't there? and what's even wierder, the engine starts without this relay [FP to B+ jumper is still there] so i am all confused.

and yeah, i did check the parts number thread, no luck

thanks for the help & support.

I think on the later trucks, like yours, the Fp - B+ jumper does bypass the CO relay contacts instead of turning on the CO relay as happens in the earlier trucks. If so, then yes, the CO relay is out of the picture. One thing you could try is hooking up a voltmeter or light on the fuel pump power wire to see if indeed it is getting power (or not) when you have trouble starting. Or you could rig up a fuel pressure gauge and see if you are getting fuel pressure (or not) when you have trouble starting.

BTW: As I recall, the CO relays usually run well over $100, which is the main reason I did not run right out to slap a new one in my truck. The test jumper worked fine for a few years and recently the problem seemed to have fixed itself, been running w/o the jumper for over a year now w/ no starting problems.