cover8

Tried posting this before maybe someone can help.

How is the power steering related to the cluster? Whenever I put load on the power steering my cluster will work with the engine running. My cluster works with the ignition key switched to on...and will work while the car is turning over but once it is started and running, the coolant and oil needles will peg and the tach and speedo will not work. .

I dont think it is in the steering column because if the car is on jack stands, where the power steering has no load, the cluster will not work with the wheel slightly turned...until I bottom out the wheel to one end or the other...and the cluster works perfect.

During this time, the PFC is reading the TACH funct. perfectly. The PFC will not read out the speed until the speedo on the cluster is working.

Speedo is brand new. Also if I remove the one wire on the PS pump, no matter how much load on the power steering, the cluster will NOT work. The single wire to the PS pump must be connected to the pump for the description above to hold true.

I have tried to solve this problem and have not idea what to do now.

Thanks for your help!

jwhite94RX7

I'm guessing that the cluster is missing a ground connection and is finding ground via the power steering wire.

On page Z-30 you can see that the P/S Pressure switch can supply ground to the instrument cluster via node 31. I'd check for an open ground wire supporting the cluster, such as terminal 4H on connector C1-D1.

Good luck!

cover8

I talked with Muhammed from MZM Performance and he said when the power steering is put under load it grounds that wire so that it sends a signal to the engine to rev a little higher so to not stall.

Damn jwhite! Thanks for your feed back! I have the electrical diagram thanks to "mcf" of Canada.

I know that it is ghetto but can I simply just ground that wire to the block to theoretically make the cluster function?

Is that single wire that important for the power steering function?

Thanks

cover8

Well (ghetto I know) I just grounded the p/s switch and the guages worked beautifully.

Thanks! Very, very nice to have a functioning cluster!

jwhite94RX7

It would certainly be better to find the real problem.
That wire does not affect the power steering function.
It just reports the power steering status.

It's your car.

cover8

Agreed, I will find the problem...but you were correct about the ground. There is a cluster wire that is not ground on the x-12 connector. This is a temporary fix and appreciate your feedback very much.

Thanks

jwhite94RX7

I'm not clear as to what you meant by "there is a cluster wire that is not gound".
There are two wires on X-12 that are ground.
They're both B/LG(E).
There are several cluster wires on X-12 that are definitely not ground (e.g., oil level, oil pressure, coolant level). See page Z-44.
Were you referring to a particular wire?

I'm also not sure why you focused on X-12, except that the P/S pressure switch wire goes through it.
If your speedo is brand new, as you said earlier, there are other points where installation of the speedo could have messed up a cluster connection.
Usually problems occur where someone has been messing.

cover8

Which connector would you focus on? I had Dave at KDR reterminate the ring harness during the 5speed swap. apparently there is a wire somewhere that is not grounded for the cluster to take an alternative ground on p/s presure switch.

Is the unrounded cluster wire on the smaller blue connector (connects to engine harness) the the large blue (auto) fixtured to the kick panel.

thanks for your help

jwhite94RX7

In your original post, you said that when the problem occurs, the coolant and oil needles peg. What about the fuel level? Is it affected by the P/S connection too? Or not?

Nat6c

iTrader: (1)

no fuel gauge works on it's own, i'm having the same problem with no luck... it's pissing me off. i'am have to check cover 8's stuff. on connector x-12.


hey cover8, ever figure it out? i got the same problem, i actually FINALLY found your post. =-)

Carlos.
93 fd non sq