NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   -   Oil Pressure Gauge Not Working (https://www.nopistons.com/2nd-generation-specific-17/oil-pressure-gauge-not-working-13651/)

Shane.Trammell 03-17-2003 10:51 AM

what should i tell them to look for??

Shane.Trammell 03-17-2003 10:52 AM

i dont really expect them to know anything

Shane.Trammell 03-17-2003 10:58 AM

is it just gonna be like a ground wire hanging out or what?

pengaru 03-17-2003 11:02 AM

BTW, be careful with that oil pressure wire... on my S4 GXL the oil pressure connector had no insulator, and managed to fall off of the sending unit. Driving along I see my oil pressure shoot passed both extremes going back and forth... Somewhat panicing, I look under the hood and find the connector was resting on the engine... After I put it back on the sending unit, the gauge always at 0 (off) was below 0 and when it was supposed to show 30 it would show 0, 60 would show ~30 etc. it shifted the needle on it's shaft when it tried turning it passed it's extreme.... since there are stops that will keep the needle from going too far, but the static friction between the needle and the shaft is not very much.



Just a heads up, but other S4's I've seen have an insulator on the connector so mine just sucks... not sure if it was originally like that. Fortunately I was able to take apart the gauge cluster and shift the needle back into position, it seems ot be ok now.

Shane.Trammell 03-17-2003 11:04 AM

what about for the trailing coil thing?

pengaru 03-17-2003 11:08 AM

i can't find any pictures right now, at my apartment i only have dialup, i'll see if i can find them later when i have bandwidth.

Shane.Trammell 03-17-2003 11:10 AM

ill just go up there and be like yeah fix it

j9fd3s 03-17-2003 11:47 AM


Originally Posted by Shane.Trammell' date='Mar 17 2003, 09:04 AM
what about for the trailing coil thing?

the trailing coil is the one next to the brake master cylinder. step 1 is to make sure its plugged in, step 2 would be to unplug it (there are 2 round white connectors), make sure all the pins are in the plugs and that theres no corrosion or any thing wierd going on. plug it back in clear the codes and see if it comes back



mike

Shane.Trammell 03-17-2003 06:39 PM

ok i will check that out.

Shane.Trammell 03-19-2003 10:53 PM

ok the prob is getting worse. the tach dies more frequently now and sometimes its hard to start. it will be cranking really slow and then all of a sudden it will start turning over stronger and more quickly and will start. it kind of seems like when the starter went out before but now theres now smoke from the starter. any help would be great guys. also how exactly does the tach work? what is the exact path to follow for it and all of that?

89 Rag 03-19-2003 10:58 PM

could be any of the following; battery, ignition, magnetic switch, or starter.

89 Rag 03-19-2003 11:07 PM

1 Attachment(s)
btw this is the trailing coil, its up by the clutch resivoir-if you had one-

Shane.Trammell 03-19-2003 11:10 PM


Originally Posted by 89 Rag' date='Mar 19 2003, 10:58 PM
could be any of the following; battery, ignition, magnetic switch, or starter.

this stuff for the tach?? thanks for the help

89 Rag 03-19-2003 11:16 PM

I cant imagine you have a tach problem, it just does what its told, you dig? The problem is in the ignition department. A smoking starter would be a sure sign of that. Not unlike your oil sending wire, this could be loose or broken wires in a number of places, battery, ignition, magnetic switch, and starter...

Shane.Trammell 03-19-2003 11:21 PM

im guessing the starter wont have anything to do with the tach. could the coil have been damaged while trying to get the car unflooded? i guess im just gonna have to take it to an electrician to get him the check the resistance on that trailing coil. if the coil was weak wouldnt it make it start weak?

89 Rag 03-19-2003 11:28 PM

If you have a multimeter, you could test the coil, not the igniter, just the coil

Shane.Trammell 03-19-2003 11:36 PM

i dont have any of that electrical stuff

89 Rag 03-19-2003 11:42 PM

Im not positive its the trailing coil, I would look at the magnetic switch, ignition switch to start with.

89 Rag 03-19-2003 11:54 PM

You can be meticulous and check all the systems; battery, alternator, starter & magnetic switch, leading and trailing coils, ignition switch, and all involved wiring and connections. Also A/T rides have an inhibitor switch but if it's bad I would imagine it wouldn't start at all, (can't say for sure as I dont have experience with A/T RX-7's)

Shane.Trammell 03-20-2003 10:23 AM

ok thanks

j9fd3s 03-20-2003 11:37 AM


Originally Posted by 89 Rag' date='Mar 19 2003, 09:54 PM
You can be meticulous and check all the systems; battery, alternator, starter & magnetic switch, leading and trailing coils, ignition switch, and all involved wiring and connections. Also A/T rides have an inhibitor switch but if it's bad I would imagine it wouldn't start at all, (can't say for sure as I dont have experience with A/T RX-7's)

yeah if thats bad it wont crank



mike

Shane.Trammell 03-25-2003 11:02 AM

ok so i went up there today and i told them and they are like theres no way that its something we did. im like just look at it and if its not your prob then dont worry about it. so they look at it and they dont see anything but then this other guy sees this one ground wire that is just hanging around. its connected to the firewall and i guess it is an engine ground. anyways it wasnt hooked up to anything so they hooked it to the engine. now the prob has stopped and its all good for now. what is this wire supposed to be hooked to? its right on the firewall on the passenger side by the vin stamp. pics if you need em

j9fd3s 03-25-2003 11:10 AM

theres a spade terminal bolted to the fire wall, right by the vin



mike

Shane.Trammell 03-25-2003 05:47 PM

umm whats that and whats it do?

pengaru 03-25-2003 06:03 PM

yet another engine ground


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