does this indicate dying pump?

[wolf alchemy]

So driving home. HP feels great and normal, but idle was odd at times and I noticed when I went to neutral with no gas pedal. Rpms stayed above 1000. It also felt like I lost 100 HP twice randomly, but only for a sec. Wish I had my logger. So I get home and go for a drive every thing seemed normal other than idle wouldn't drop below 1000 during some shifts. Get home and watched the logger during idle. Here's two pics since dsmlink won't ever work again.

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[mercaholik]

You mean fuel pump cause you can check for power with a volt meter ( every dsm'er should have one) and if there's good power and ground wiring test the pumps pressure and flow. You can rent a pressure tester from an auto zone with a deposit.

 

[synthetek]

If your talking about the fuel pressure and pump voltage in mmcd than those values don't mean anything, none of that stuff on the 4th page of mmcd can be logged on a 1g. You have dsmlink? Why wont it work?

 

[wolf alchemy]

If your talking about the fuel pressure and pump voltage in mmcd than those values don't mean anything, none of that stuff on the 4th page of mmcd can be logged on a 1g. You have dsmlink? Why wont it work?

But when the fuel voltage dropped to zero the car almost died. twice with the same mmcd readings for pump voltage and for the fto2. And the palm works fine as a pda, but every time I sync mmcd to the computer the entire thing never will sync again no matter what I try. I couldn't redownload windows so I got a new computer and tried it. Once again one sync of mmcd and its dead according to the computer. No matter how much I delete of all the PDA stuff and reinstall. It keeds erroring.[DOUBLEPOST=1416122479][/DOUBLEPOST]

You mean fuel pump cause you can check for power with a volt meter ( every dsm'er should have one) and if there's good power and ground wiring test the pumps pressure and flow. You can rent a pressure tester from an auto zone with a deposit.

I do have a multimeter, I know flow and pressure are fine. No power loss when hard on throttle. Its only during cruising or when idling it sometimes happens. When it happens going 60 its like I completely let off the gas pedal, but it felt like I put in the clutch. No lurch. It only dropped 300-600 rpms so that might be why it felt like a neutral roll.

 

[mercaholik]

Roger, how about your tps? Sometimes the sensor gets a dead spot in it that can cause weird issues. Your logger might not catch it but testing it directly with the meter and slowly sweeping the entire range should. Is it consistent or random?

 

[wolf alchemy]

Well....now that you mention it I do recall seeing my tps sensor said it went from(approximately). 90%-50%-90. In a short time. But I dismissed it since I thought maybe I accidently let off the pedal a little. That was while acclerating full on throttle.