Ford Crown Victoria | Mercury Marauder | Grand Marquis | P71Forum for discussion of the Ford Crown Victoria, Mercury Marauder, Mercury Grand Marquis and P71.
I just bought a set of gauges for my 88 CV. I have the tach installed already. However, once I installed it the car wants to keep dying unless I have my idle screw all the way in. Also how do I install the temp and oil pressure gauges. Is there a spot already in the motor that I can hook them up to? The are mechanical gauges. Thanks.
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88 & 94 Crown Vics.
5.0 & 4.6 both Stock
No mods to either one, yet...
Have you tried disconnecting the tach and see if it runs better? It may just be coincidental that it runs different.
Did the gauges come with sending units? They would mount where the old ones were. The temp sender would have to be mounted in a different location due to the ECt being needed for the fuel injection.
Yes I did. As soon as I noticed it I disconnected it. It still ran the same. No it did not come with a sending unit. I had a feeling that I would need to get another one but where is it located at? As far as the temp, can I just take out the wires that are above the thermostat housing and put it in that hole. I don't care about the dummy lights on the dash.
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88 & 94 Crown Vics.
5.0 & 4.6 both Stock
No mods to either one, yet...
I haven't worked on the older Vics in awile so I don't know if that would cause fuel injection issures. The PCM needs water temp readings to adjust the mixture. When I get a chance I'll see if I can find out. Meanwhile someone else here may chime in. As for the oil pressure, that only runs the light, so you're set there. Did they let you know what sending unit will go along with that gauge?
If the oil pressure gauge is mechanical, you can get a tee or a fitting that will fit the lines you'll need and the lines to connect it the gauge. You don't have the lines either? They are usually hard plastic with compression fittings.
Yeah it came with the oil line and the temp probe. I just need to know where to put them or what else to buy to make them work properly. If you think that it may just be a tee fitting, where would I put it?
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88 & 94 Crown Vics.
5.0 & 4.6 both Stock
No mods to either one, yet...
Sorry if I sound stupid, but would I put the tee there or a different sending unit? Also where is it located at on the 88? I saw on my 94 it was right by the oil filter. Is it the same on the 88? Sorry it's been raining here for a few days so I can't get out there and look. Thanks.
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88 & 94 Crown Vics.
5.0 & 4.6 both Stock
No mods to either one, yet...
YOU DONT MESS WITH THE IDLE SCREW!!! sounds more like either the throttle position sensor is acting up or the the idle air control valve is sticking and messing it up. i would clean out the idle air control valve real good along with rest of the stuff by the throttle body like the EGR system and such. i would also try going to junkyard and getting/snagging a couple throttle position sensors to switch yours out with. the screw you mess with only adjusts the butterfly in the throttlebody.
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my 1986 Grand Marquis LS... Rose...
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