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Topic: speedo not working well (Read 1095 times) previous topic - next topic

speedo not working well

1990 xr7 3.8 ,auto trans .only goe's to 30,very irratic,oddometer not working,is it speed sensor? or speedo? do these cars even have a speedo cable?:evilgrin:

speedo not working well

Reply #1 –
The problem is likely the speed sensor gear which is easy to replace.

Do you have buttstuffog or digital instrumentation?

I am not sure about the rest of your message as it is hard to read.

thanx for replying

Reply #2 –
its buttstuffog,where is this gear located?:D

speedo not working well

Reply #3 –
Forgot to say car runs great and so does the trans,its just the speedo thats the problem,sorry

speedo not working well

Reply #4 –
Quote from: leclerc50@verizon.net;232622
its buttstuffog,where is this gear located?:D


I assume where most of them are located, on the transmission tailshaft housing.

speedo not working well

Reply #5 –
Look on the driver side of the transmission.Towards the back/side,you'll see the sensor in the side with one bolt at the back holding it on and a harness going to it.Remove the bolt,and pull out the sensor.The gear is clipped on to the sensor.If the gear looks fine,you may need to replace the sensor.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

speedo not working well

Reply #6 –
Thankx for all the help! the internet is great!I will tackle this job soon, This is my sons car, 17,had to do a blown head gasket job on it last feb, I did a pretty good job, this should be easy
got to get up at 4am for work so seeya! Thanks!

speedo not working well

Reply #7 –
The bolts were either 7/16 or a 10mm socket.I've had both on my cars.One bolt,one plug.That easy.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..
 

odometer not working?

Reply #8 –
1993 xr7 ,3.8 ,A/T
just replaced speed sensor ,speedo works{buttstuffog} but odometer and trip meter not working,could it be wireing or the speedometer head? problem started after I had to pull the heads for blown head gasket,every thing went back together fine except for one wire next to throttle body,looks like some sensor wire,schematic shows its intake air temp sensor,yellow with white stripe,i dont think this would make the odometer stop working?:mad: