Confused: "Incorrect" fuel injectors... killed my

[zippyslug31]

Hi all... been searching here and elsewhere but can't figure out my problem. Any help/thoughts would be very much appreciated!
I have a '90 syncro westy that I replaced the fuel injectors but I didn't know I had a 3 ohm injector until it was too late.... haven't been able to start the van since. Fearing that I did some damage I reinstalled my original injectors to run some tests from the Bentley and pro-training digifant guide.

Currently don't see any kind of injector pulse rather only a steady 'open-state' when the engine is cranked so they spray fully at all times. I tested one of the injector's wiring plug with an LED and it confirms no flickering only a steady ON condition.
Unplugging the electrical plug from the injectors, cranking engine, no fuel is leaking from the injector so it doesn't appear to be a fault with the injectors themselves.

Performed several Bentley/Protraining tests but one note-worthy test was from page 114 of the Protraining Digifant guide.... testing the total resistance of the injector circuit fails. I don't see any continuity between pins 12 and 14. They go on to say that if this fails I should replace the harness.
How can this be since the van had been running before this? Did the lack of resistance from the new injectors allow a surge and fried a wire somewhere?

I've also checked the fuel "power supply relay" (next to the fuel pump relay) but don't think that's at fault. At this point I'm really not sure what else to check, or what to think about they supposed failed ECU wiring harness .
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previous:
'80 westy
current:
'90 syncro westy 2.5L subi, triple knob, 16" wheels.
'84 sunroof van, 2.1L motor.

[r39o]

No pulses from the ECU mean that the ECU is not generating them.

Substitute another ECU.
_________________
"Use the SEARCH, Luke" But first visit the Vanagon FAQ!

1990 Multivan EJ 22, Rancho trans 0.82 4th, Small Car front AC, CLKs w/ 215/65-16, homemade big brakes 303mm, Konis, Recaros, etc....

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[zippyslug31]

[crazyvwvanman]

That test step 5 of pins 12 and 14 is not valid for your year harness, 1990. Bentley diagrams show that in later years the FI harness had some small changes and that is one of them. The test procedures were written earlier and not updated.

If you look at the diagram for 1987 you will see that pin 12 and 14 connect through the injectors but the later diagrams show there is a relay wiring change. You can still do the measurement of step 5 but use pin 87 of the FP relay socket and pin 12 of the harness connector, ignore pin 14 for the test.

EDIT: It is very possible that you fried the injector driver transistor in the ECU.

Mark

[r39o]

[Captain Pike]

As stated ECU is gone BTDT sorry
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LEARN TO SELF RESCUE
59 Panel bus, 1966 Single cab. 73' 181. 73 Westy. 91' H6 Vanagon 3.3L.
.....................All Current.......................

[PDXWesty]

I see ECU's quite often here on CL. Call around to the local shops as well. They should be able to dig one up for you. Always V-Dub has a big stockpile of used parts.

Here's one ad:

http://portland.craigslist.org/clk/pts/2362492200.html
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89 Westy 2.1 Auto

[r39o]

[zippyslug31]

Thanks guys.

While I suspected (feared) it was the ECU I didn't want to jump to any conclusions. At this point I have a call in with the supplier. Not sure what they are going to say regarding this seemingly incorrect injector and if they are willing to replace my ECU in some fashion. Think I'm in for a big fight but trying to keep an open mind. Also good to know that I can find a used one for not a lot of money.

I don't want to name names, but I'm really surprised that a "knowledgeable" vender would send me such an incorrect part. When I talked to them once before they claim they've sold many of these without the slightest problem.

Does anybody know if any vans had ECUs with resistance packs that could handle the 3 ohm injectors... or should I assume they sent me completely the wrong type of injector?
_________________
previous:
'80 westy
current:
'90 syncro westy 2.5L subi, triple knob, 16" wheels.
'84 sunroof van, 2.1L motor.

[bluebus86]

sound like an ecu failure. used ecus are a crap shot, The old one in my van styill ran, but it had an intermittant issue, had to replace it, got a good reconditioned / tested one from vancafe. also recommned there ecu tester either buy it or rent it, it will help diagnois all sort of probelms to be found on an old van. my van had several issues that the ecu diagnositc tool found, now she runs better than ever.

good luck

[zippyslug31]

[insyncro]

Your 90 Syncro should have a D series ECU.
Check all the retailers.
I have them in excellent tested used condition if needed.
They are pricey.

dylan

[zippyslug31]

Interesting... why do I specifically need the "D" item... I understand them to be all the same?

Not sure what company you are with and don't mean to start any sort of us-VS-them but curious what you make of this:
http://www.van-cafe.com/home/van/page_590_1211/ecu___electronic_control_unit___rebuilt.html

Also, $225 doesn't seem all that expensive to me considering the part. Am I missing something?
_________________
previous:
'80 westy
current:
'90 syncro westy 2.5L subi, triple knob, 16" wheels.
'84 sunroof van, 2.1L motor.

[[email protected]]

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?Vi...ESELX%3AIT
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2001 eurovn weekender 207k fresh batteries