Question about 1994 Geo Metro
ECU and injector are both new. On startup I get a pulse to the injector to spit. After that no pulse feed line pressure is good. Compression and spark is good. Timing belt is good. Relays are good.
Last time I asked this someone got really over zealous and wanted to take my car apart and put it together in an hour. Please answer just the question
You want a simple answer but there is not one. The ECU looks at many things to determine what (if any) pulse is proper. Any sensor which sends no information or info outside of normal limits can prevent pulse. No info from crank/cam sensor is common issue, Bad EFI fuse or relay can do this. Bad ECU ground or other ground (Fuel rail) can do this. Many sensors can be tested with ohm meter.
Posted on Mar 27, 2015
What wild guessing>?
or how to fix cars.? EFI.
the answer is same on all EFI engines. !
The ECU injects based on inputs.
(this is like EFI basics 101, day 1. need Block diagram?))
the dead injector has many causes, must list them all for you.?
did a NOID light test fail? this is first test on all dead injectors , unless you have tools and can check fuel pressure.
I don't want to overload you with facts, or tests. as there are many.
The ECU cuts injector dead (noid DEAD) for (inline injector resistor blown (side show1)
Ignitor reads dead.
DTC errors, fix those yet?
Posted on Apr 11, 2015
I bet you live in a salt zone. With the age of the car you have may have connection, contact extensive corrosion problems. Check all of your connections, clean and scrape to bright metal both sides. I used electronic point/connection cleaner too. I had a serious problem with cold start.
The very difficult to get to Thermal sensor connection got this treatment. Cleared the codes,
Wala, instant start, just like new.
Posted on Mar 28, 2015
The ECM turns the injector on , check for control ! You have two wires , one is power the other is control. It depends on how it is set up , is it power side switch or ground side switch Ok after looking at a wiring diagram I see the ECM supply's a ground ! An it gets power from FI relay in fuse / relay box an check FI fuse 15amp in the same place !
Posted on Mar 28, 2015
Camshaft sensor sends code to spit gas at times when the camshaft is at intake valve open
Posted on Apr 14, 2015
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Posted on Jan 02, 2017
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