Search found 319 matches

by Alex170984
Tue Jun 18, 2019 2:06 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

Sounds like an issue I had with one of my AE86s. Check the fuel circuit in the AFM. Try jumping the fuel test circuit at the diagnostic port. If the engine runs by jumping the fuel circuit then check the ground at the AFM plug. This is the ground bolted to the manifold, top of the runners under the...
by Alex170984
Mon Jun 17, 2019 3:17 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

It now fires up! It was an earth problem and I fixed it in a different way but won't go into that. So thank you for everyones help and advice and apologies if I did not seem gracious because I am! Now, the next problem! It runs for 5 secs then dies- i'm assuming this is the AFM? I don't have my thro...
by Alex170984
Fri Jun 07, 2019 1:39 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

Yeah lol it's going grey though due to my twin boys. I have wiring issues though through the reasons I cannot explain.
by Alex170984
Fri Jun 07, 2019 8:13 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

Just an update for you all, I have an earth problem.

More ecu earth problem.
by Alex170984
Mon Jun 03, 2019 1:02 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

My E1 is definitely not there..

However, I've got a photo of another set of ECU - 4AGZE AFM plugs which shows E1 being vacant as well.
by Alex170984
Sun Jun 02, 2019 4:57 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

My ecu plug also does not have a pin for E1 earth - is that odd?
by Alex170984
Sat Jun 01, 2019 4:56 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

Hi Jondee,

Thanks for confirming this.

My E01 and E02 are both open circuit so this obviously has a problem.
by Alex170984
Sat Jun 01, 2019 2:02 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

Hi,

Can anyone tell me where E01 and E02 ground to please? Is there an exact location for those earths?

Many thanks.
by Alex170984
Fri May 31, 2019 4:59 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

My noid lights arrived yesterday. I managed to test injectors 1 & 2 before I had to stop, nothing lit up.

Either I put them on incorrectly or I didn't see them flash, but there was defintely no flash from 1 or 2.

I will test the other two again later.
by Alex170984
Mon May 27, 2019 9:14 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

My noid lights are coming in the post this week.

Out of curiosity I tested my compression which is 150, 160, 160 and 160 so no issues there.

My igniter isn't bolted down so could that create a problem?
by Alex170984
Tue May 21, 2019 1:07 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

'the OP (after I asked) said that this was a engine swap my 85 MR2 the main wire harness came through the rear fire wall at a different location then the SC wire harness you either have to drill a new fire wall hole or put a lot of stress on the wire harness (IMO) in an effort to try to make it work...
by Alex170984
Tue May 21, 2019 5:30 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

Hi all, Thought it was worth a post as I haven't for a while or had time! I stripped the wiring back to the ECU plugs for the injector grounds and live and there were no broken wires that were interfering with any live leads. There were a few broken strands on the live side so I cut these back and c...
by Alex170984
Sun Apr 21, 2019 8:12 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

Hi Jondee, Happy Easter by the way! The earth I'm referring to comes off the engine hook on the RHS of the head to a black connector. This then plugs into a wire bolted to the chassis strut tower. This is connected to a wire that bolts to the injector resister bolt on the chassis, sound longer winde...
by Alex170984
Sun Apr 21, 2019 10:47 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

Does the head to chassis earth, via the electrical connector actually do anything?
by Alex170984
Fri Apr 05, 2019 2:51 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

I'm buying another gze loom and ecu for a good price incase one or both of mine are fubar.

I've got to take my loom off anyway, as it's too awkward tracing wires back with it all installed.
by Alex170984
Mon Apr 01, 2019 5:30 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

Hi Davew7,

I've already got inside the plastic trunking of that part of the loom, so it's just finding the time to get at all the wires. It's relatively easy to access, just time consuming.
by Alex170984
Mon Apr 01, 2019 3:14 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

Here is a pic of how the factory insulates a two into one splice with several turns of black tape. When the splice is unwrapped it should look like the lower image. The factory uses an uninsulated butt crimp that is not easy to find in shops. So if your crimp looks like the one in the pic it is pro...
by Alex170984
Sat Mar 30, 2019 4:19 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

Hi guys, I thought it was a little odd that the main wire which has the tee'd wire for the injector 1 earth, ran past injector 1 and disappears into the tangle of wires that goes toward the distributor. I did put my multimeter on the wire before the tee which gave spurious results above 0v which was...
by Alex170984
Thu Mar 28, 2019 1:44 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

The wire above that tees off, that goes to injector 1 earth.

The wire then going south, I don't know where that goes yet. I'm going to have to see if injector 2 ground comes off of this wire as well.
by Alex170984
Thu Mar 28, 2019 1:42 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

Image
by Alex170984
Wed Mar 27, 2019 4:10 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

I had a spare 45 mins earlier tonight to take the rail off and get inside that part of the loom... I traced back injector 1 ground wire to where it splits off from another ground. Where the injector 1 ground splits off the main ground wire, the rest of that wire looks like it goes towards the dizzy ...
by Alex170984
Tue Mar 26, 2019 7:50 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

Can I have clarification as to where all the earthing points are please? Is the one for the rail/intake, on the engine hook that bolts to the head or is there another one somewhere? I would like to point out that I am using a 4AGE head, as a cam cap bolt sheared off inside my GZE head. The bolt was ...
by Alex170984
Sat Mar 16, 2019 3:20 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

Hi Unlimited86, I have acknowledged the suggestions and advice. I've recently had twins, 15 days ago to precise so my time on here and my car now, is very limited. I have tried all of the suggestions and I have come back to the same problem, of having 12v on my earth on injector no1. I have tested t...
by Alex170984
Thu Mar 14, 2019 3:15 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

In electrical wiring diagrams electricity is thought of as flowing from the higher potential 12V positive terminal to the lower potential ground terminal. Thus the "downstream" side of an item with some resistance will be the side that is closest to the negative or ground terminal. I have...
by Alex170984
Thu Mar 14, 2019 3:07 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

Hi Dave,

My engine came with the 4AGZE harness. Nothing had been modified to make it work.

I'm guessing one of the wires in the conduit has broken down. I'll get the rail off at the weekend so I can get to the mass of wires underneath.

Is there a earth point somewhere under all that lot?
by Alex170984
Wed Mar 13, 2019 4:37 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

Hi Dave,

This is on a converted AW11, but I did cover over 2000 miles in 2017 before I decided to rebuild the engine.

This is a problem that has occurred whilst the loom has come off.
by Alex170984
Mon Mar 11, 2019 4:19 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

Hi Dave,

Yes it does.

I've had it running when it's been flooded by the cold injector.

If the resistor pack was not giving the full amount of voltage, would this affect all the injectors?
by Alex170984
Sun Mar 10, 2019 4:46 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

Here is the basic wiring schematic for the AW11 4AGZE injectors... https://i.imgur.com/SHX6RKn.jpg As you can see, the injectors are wired in pairs, and it is impossible for only one injector to have 12V on the downstream side if they are wired correctly. If you have 12V downstream on only one inje...
by Alex170984
Tue Feb 26, 2019 1:06 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

I have since cut off the first injector plug connector as there were only a few strands attached on the earth to the plug. I've tested the wires again. I have 12v on all power leads on all 4 injectors. I have dropping voltage to 0 on all 4 earths. Injector 1 had 12v straight away on injector 1 earth...
by Alex170984
Tue Feb 26, 2019 3:54 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE Injectors Not Firing
Replies: 70
Views: 2845

Re: 4AGZE Injectors Not Firing

Hi Dave,

The car doesn't run on on 3 I'm afraid to say. Tweaking the dizzy made no difference either. I didn't put my foot on the clutch though.

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