Engine problems, help needed!!

[Import Tuner]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by inlinefour:
I have another question. When the key is turned to the ON position the pump runs for 2 seconds. My pump sounds high pitched at first, then tones down. Is a properly running pump supposed to change tones like that? <HR></BLOCKQUOTE>

Depending on how long the car has been shut off, the pump will whine at a higher pitch until the fuel system is pressurized between the pump and the regulator...

Are you hearing a good audible click from under the dash area, when the CEL goes out after 2 seconds?...

Remember the main relay is actually (2) relays incorporated in (1), and while the fuel pump may run, the ignition side of the relay may fail...
(It's fairly common)...



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Donny
Import Specialty Automotive
(253) 473-2606

[inlinefour]

Well, I changed the coil and rotor. The problem remains still. It must be fuel related, nothing else seems logical.

The timing marks all line up on the motor. The compression is 210, 210, 210, 195. The fuel pump must be bad.

If one of the relays goes out, the car just won't start, right? My car starts fine, it just won't run worth a shit.

Thanks for your help guys. I need more.

[Import Tuner]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by inlinefour:
I need more. <HR></BLOCKQUOTE>

More What ?...
Money to throw at this thing (ie. the fuel pump must be bad)...

A Helms manual is only $60.00 or so, and It'll tell you how to test certain components that cost well in excess of the cost of the book...

Just a friendly observation...



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Donny
Import Specialty Automotive
(253) 473-2606

[inlinefour]

I have a Helms manual.

[Def]

I'd try to find someone who had the same OBD type 'Lude ECU and swap it out. See if it helps.

It doesn't sound like it's related to a physical component, unless it's a sensor. And I've heard of a few 'Ludes having weird ECUs. Giving them all sorts of weird problems, usually the idle/partial throttle performance is bad. Whenever it's on closed loop mode, it seems to run OK.

Just an idea...