Back to shop ↗
THE HOLDEN COMMODORE FORUM

HOLDCOM Community

Built around the cars. Kept alive by the people.

+ Start a discussion
Holden Commodores gathered at Holdcom
Forum Home›Technical help
Technical help

car sometimes doesnt start

Started by MaZzA vbmenu_register("postmenu_1535337", true); · 29 Aug 2007 · 6 replies

Preserved from CalaisTurbo. Original authors and dates are shown; archived members are not current Holdcom accounts.

sometimes, only every now n then (usually when i drop it in to get work done ) my car doesnt start turn the key and theres nothing my mate told me to wiggle these (shown in the pic) and then try start it and it works can someone tell me wat all three are? they are located drivers side in the engine bay by the battery i got told to change the one closest to the front of the car (the one at the bottom of the photo), will this one have something to do with it now starting? got told its a neutral switch or moudule or something thanks in advance Some original photos have not been recovered yet.
0 likes
One of those is the ECU reverse polarity relay, but hey just swap all of them, your time is prob worth more than the relays Some original photos have not been recovered yet.
0 likes
Yeah those first 2 relays are for the automatic gearbox as far as I know... That is the relay you bridge the purple wires in order to bypass the neutral lockout when doing an auto-manual conversion. I'd say that has a poor connection which would tell the computer your not in park/neutral and wont let the car start (as it thinks its in drive/reverse) Maybe just give the whole lot a clean with contact cleaner etc or re-wire a new relay into it,....
0 likes
If you do swap them, keep in mind the reverse polarity relay (the grey one) is different to the others in that it has a change-over contact in it. A normal relay will not work.
0 likes
Quote: Originally Posted by Hingo Yeah those first 2 relays are for the automatic gearbox as far as I know... That is the relay you bridge the purple wires in order to bypass the neutral lockout when doing an auto-manual conversion. I'd say that has a poor connection which would tell the computer your not in park/neutral and wont let the car start (as it thinks its in drive/reverse) Maybe just give the whole lot a clean with contact cleaner etc or re-wire a new relay into it,.... yeah thats wat i was thinkin aye im probly gunna change all three how much roughly are they each?
0 likes
Maybe just go rip one out of a vl at the wreckers... 99% of them are auto so you should be right... See how that goes... In the pocket and out you go...
0 likes
any one know how much these relays are new
0 likes
Sign in or create an account to reply. New members are welcome—no purchase or old CT account needed.

Who’s online

0 members and 0 guests active in the last 15 minutes

No signed-in members active right now. Guests are welcome to browse.

Visitors Today3

33,602 threads, 484,230 posts and 24,897 images saved from CalaisTurbo.
As at . Recovery is continuing.