reasons injectors wouldn't work? 88 NA
11-09-04, 01:12 PM
#1
Lean Mean Speed Thingie
Thread Starter
Join Date: Mar 2002
Location: Moscow, ID
Posts: 1,102
Likes: 0
Received 0 Likes
on
0 Posts
reasons injectors wouldn't work? 88 NA
assuming injectors are plugged into the harness, the harness is plugged into the ecu, and they are getting fuel, what other reasons specifically would they not shoot any fuel
11-09-04, 02:27 PM
#2
Lives on the Forum
What is it with all of the injector problems all of a sudden? 
Well, you'd need a ground to complete the circuit. Switched on by the ECU, physically located on the rear rotor housing.
Going back the other way in the circuit, you'd need a good fuse, and the main relay to work. Then, there are the 4 splices buried in the harness somewhere that take the single power wire from the relay and *poof* make 4 for each injector...
Basically, if you have power, a good injector coil, a good ECU, and a good ground (and good wiring connecting everything), the only other thing would be a clogged injector...
Well, you'd need a ground to complete the circuit. Switched on by the ECU, physically located on the rear rotor housing.
Going back the other way in the circuit, you'd need a good fuse, and the main relay to work. Then, there are the 4 splices buried in the harness somewhere that take the single power wire from the relay and *poof* make 4 for each injector...
Basically, if you have power, a good injector coil, a good ECU, and a good ground (and good wiring connecting everything), the only other thing would be a clogged injector...
11-09-04, 02:33 PM
#3
HAILERS
Join Date: May 2001
Location: FORT WORTH, TEXAS,USA
Posts: 20,563
Likes: 0
Received 22 Likes
on
20 Posts
They wouldn't fire if there was no output from the CAS to the ECU. It's my understanding though, that if you see spark at the plugs, then it should follow that the ECU will also pulsse a ground on the injecotors to fire them also......unless the drivers for the injecotors are shot.
Plus all the other stuff above. Gotta have a ground for the circuits inside the ECU.
Plus all the other stuff above. Gotta have a ground for the circuits inside the ECU.
11-09-04, 02:40 PM
#4
Seduced by the DARK SIDE
Join Date: Apr 2001
Location: Orange Park FL (near Jax)
Posts: 7,323
Likes: 0
Received 2 Likes
on
2 Posts
Shorted or open coil in the injector.
A wiring or connector problem - Ecu pulses not getting through.
A fried ECU.
An S5 whith the long range TPS signal at ~5v so the ECU sees WOT & cuts fuel.
A wiring or connector problem - Ecu pulses not getting through.
A fried ECU.
An S5 whith the long range TPS signal at ~5v so the ECU sees WOT & cuts fuel.
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM
86rxNa
2nd Generation Specific (1986-1992)
2
08-11-15 11:51 AM