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| ECM upgrade (1227730) for stock 2.8 (Page 88/107) |
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mtownfiero
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APR 07, 10:14 PM
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is there any program for the 7730 with an aldl.
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Darth Fiero
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APR 08, 01:03 PM
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americasfuture2k
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APR 08, 04:59 PM
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mtownfiero
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APR 08, 06:51 PM
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Im basicly looking for something like winaldl but for the 7730. I want to be able to look at the values being sent to the ecm from the sensors since my motor is running slighltly rough.
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RWDPLZ
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APR 08, 11:46 PM
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| quote | Originally posted by Darth Fiero:
Actually there can be. The S10 pickups used the 2.5 duke with a distributor up until 1993. These used the 1227165 / 16156647 ECMs which were of the "P4" generation (same ECM was used in 1986-89 TPI V8 cars). The only problem is these ECMs use different connectors and wire terminals vs. stock Fiero; so the conversion wouldn't just involve a simple repinning of the harness. You would need to either buy the proper terminals and crimp them on or splice in wires that had the correct terminals. I have not done this conversion yet so I cannot tell you if there are any worthwhile benefits. This conversion would only work for 1984-86 Fiero 2.5's that had the distributor. 1987-88 2.5's with DIS won't be compatible with this ECM; but you wouldn't need it anyway. The ECM used in these cars was used thru 1991 in others with the same engine.
-ryan |
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Ooh now that's interesting. Maybe I could build an adapter harness so I could swap back and forth between the original computer and the newer one, like Jncomutt made on page 5. Need to start looking for a 92 S-10 shop manual with wiring diagrams, check the ECM pinouts...
Would the stock chip in these computers run the 84 (plug it in and fire it up once the harness is adapted), or would it need a custom chip burned? The 1227165 seems to be going for about $50 on ebay...
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Darth Fiero
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APR 09, 12:17 AM
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| quote | Originally posted by RWDPLZ:
Ooh now that's interesting. Maybe I could build an adapter harness so I could swap back and forth between the original computer and the newer one, like Jncomutt made on page 5. Need to start looking for a 92 S-10 shop manual with wiring diagrams, check the ECM pinouts...
Would the stock chip in these computers run the 84 (plug it in and fire it up once the harness is adapted), or would it need a custom chip burned? The 1227165 seems to be going for about $50 on ebay... |
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While I haven't looked into this too much, I would imagine a stock chip from an S10 2.5 would run the Fiero 2.5 just fine; as long as the transmission type the chip was made for (auto or manual) matched the transmission you have in the car.
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americasfuture2k
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APR 11, 06:24 PM
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americasfuture2k
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APR 12, 05:50 AM
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Brint
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APR 12, 10:02 AM
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Gwain, thank you for the EGR adaptor plate. Got it last Friday. Ryan, thank you for all your help and answered questions. I've just about got this thing ('87 GT) all wired up and ready to turn the key. The goal is to have it all done so al I have to do is plug in the PROM when Ryan is done with it Thanks again guys!
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Darth Fiero
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APR 13, 12:17 PM
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| quote | Originally posted by americasfuture2k:
also, on the 5 pins on that DIS connector, is pin E, the REFERENCE supposed to be at 5v or what? how can i test to see that the ECM is putting the right ' stuff ' out for the BYPASS, EST and the REF?
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I believe the Reference output from the ICM should toggle between 5v and ground (high/low) to signal the ECM there was a "reference pulse". However, let's not get ahead of ourselves here. The ICM should command the coils to produce a spark with a cranking engine WITHOUT any ECM connected to it. All it needs is power, ground, and a crank sensor signal. So I recommend you disconnect the ECM connection to the ICM and work to get your spark events occurring first. Then we'll worry about what the ECM is doing.
-ryan
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started checking DIS wires. first was all the grounds for the DIS. the 2 pin power connector is good. the 5 pin, i checked ground first. pin "F". it shows its grounded when the IGN is OFF. when i turn ign to run, it shows OL on the DMM meaning its open. does this mean my ECM is toasty?