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Topic: IVR part anolog vs electronic (Read 1053 times) previous topic - next topic

IVR part anolog vs electronic

Here is my issue. I have a 1988 Cougar XR7 with the tach and electronic cluster, not digital just all electronic. When I got the car I noticed every now and then all the gauges would max out. I would tap the clustor and they would return to normal. The temp gauge would move the most. I measured the resistance of the sending unit at temp and it read 31 ohms. I pulled the sending unit and put it in 200deg water and it read 31ohms (have a 195 t-stat). Spec for the temp sending unit is 22.5 ohms to 25 ohms at 220deg. So I thought the IVR was bad. Went to Napa and got a new one. Now the gauge is low and the fuel gauge dosen't even go to full. WTF? Are there diffrent IVRs for the various clusters? Dose anyone have a part number for the electronic cluster with tach?

Thanks,
Bill

IVR part anolog vs electronic

Reply #1 –
Sounds like maybe (just judging from the gauges maxing out - especially the temp gauge) you have a loose ground somwhere in the dash harness. If you use a jumper wire and attach it to the little boot on the red wire for the temp gauge sender, if the gauge is good, it will max out. Check for a cut in the wiring/ loose ground somewhere.
FOXLESS!!

1994 Lincoln Mark VIII

IVR part anolog vs electronic

Reply #2 –
you purchased an IVR at napa???????????????

i am not aware of any different types of IVR's,  its 12v in and 5v out. 

the buttstuffog cluster pn is in my shop manual im sure but not really positive its still available unless NOS, Junkyard is the best bet.