At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
If it used the mechanical speed cable. Check the speedometer cable attachment at the speedometer in the instrument panel. Check the speedometer cable and speedometer sending unit assembly on the transmission.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
It's possible that the 2004 Ford Ranger's engine or the tachometer itself is to blame for the difficulty you're describing with the tachometer reading. A crankshaft position sensor issue is one typical reason for a tachometer to read high. To determine the engine's RPM, this sensor transmits signals to the engine control module (ECM). The tachometer may show a reading higher than the real RPM if the sensor is broken.
There are several possible causes for this issue, including a problem with the tachometer itself, a problem with the sensor that sends information to the tachometer, or a problem with the vehicle's electrical system. It is also possible that the tachometer cable is loose, damaged, or disconnected.
It's recommendable to take your truck to a professional mechanic to diagnose and fix the problem. In some cases, the problem might be fixable by replacing the sensor or cable, but in other cases, it may require more extensive repairs or replacement of the tachometer itself.
It's also important to note that even though the tachometer is not working properly, it does not affect the performance of the engine, but it will give you a wrong idea of the RPM, which could lead you to over-rev the engine and cause damage.
From the ECM - engine computer ! Suggest you take this to a ASE certified repair shop or the Chevy dealer an have it diagnosed ! Could be the gauge itself .Looking at fuse's is no good ,there is not a fuse just for the Tachometer .
The engine control module (ECM) creates the engine speed signal. The engine speed is sent to the IPC over a discreet wire from the ECM. The instrument panel cluster (IPC) converts the signal to a tachometer position indicating the engine speed.
Common issue with the 04-05 Impala instrument clusters. It's caused by a failing stepper motor on the cluster's circuit board behind the tachometer but it can be fixed. Check this page for more about it and how to get it fixed - Impala tachometer does not work
Ok if you have a tachometer with 2 cables the positive must be
connected to the ignition and the negative tachometer what conectaras the
negative coil that way you worked well the tachometer
×