Ruff Idle ,Huge Loss of Power

[Tripler]

Originally Posted by Paul Workman

If that MAP hose(s) were disconnected and now restored, I'd wanna pull and inspect the plugs. Could be some plug(s) got fouled and will run OK when they are cleaned up.



Experience is generally a good thing when troubleshooting; it can lead one to the issue sometimes immediately. But! If guessing at the solution proves not to be the case (fix), it"s back to the basics time!



FUEL PRESSURE (static) = ?

Current draw on the pump diagnostic test point (red wire about 5cm long w/ a black terminal sticking out of the large wire loom near the W/S wiper motor) when ignition key is in the OFF position [8-10 amperes is normal for both pumps running nornally].



Let us know what U find...

Hi Paul . So the amp draw is only 7 amps and the fuel pressure reading was at 47 psi [emoji849][emoji3525][emoji853]

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[Ccmano]

Originally Posted by Tripler

Hi Paul . So the amp draw is only 7 amps and the fuel pressure reading was at 47 psi [emoji849][emoji3525][emoji853]

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You have at least one bad pump. Pull the FP1 pump fuse and check again. That will give you the reading for FP2. Subtract that number from the combined number (in your case 7 amps) and you’ll have the reading for FP1. You might as well just replace both pumps while your in there.
H

[Tripler]

Originally Posted by Ccmano

You have at least one bad pump. Pull the FP1 pump fuse and check again. That will give you the reading for FP2. Subtract that number from the combined number (in your case 7 amps) and you’ll have the reading for FP1. You might as well just replace both pumps while your in there.
H

Thanks . Yes , if one is bad , may as well change both . thanks again for all the help Ccmano and from everyone on the forum .



Recommendations for which pump to purchase ?

1995 ZR-1









Mike

[Tripler]

So we have been looking at getting a pump for the Z but man , its confusing as hell . There seem to be a plethora of numbers and make's , so which do you guys recommend for a 1995 ZR-1 ?

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[dredgeguy]

Hi Mike, we are having a maintenance day this Saturday at Jim's....wish you were here. I have 2 extra sitting on my shelf. I use Electric Performance fuel pumps part number:
P-240KC. I think I got them at RockAuto. If you have any problems finding them, let me know and I will put my 2 in the mail to you.

[Tripler]

Hey Charlie . Last I looked , they were out of stock .

Thanks

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[Tripler]

I willl check again tomorrow . Do they also have the socks and gaskets ?
Thanks


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[dredgeguy]

Just checked and they have them for a great price, $18.13 each! Yes the kit includes the socks and gaskets
https://www.rockauto.com/info/166/P240KC__ra_p.jpg

[Tripler]

Originally Posted by dredgeguy

Just checked and they have them for a great price, $18.13 each! Yes the kit includes the socks and gaskets
https://www.rockauto.com/info/166/P240KC__ra_p.jpg

Awesome thanks . Guess I was looking at the wrong site . I was looking for the entire unit but this will work indeed .



Mike

[dredgeguy]

Order 2