Mar 122017

Geo MetroHear a grinding noise around the differential area when accelerating while going straight or right. Noise is less when not accelerating and at speeds at or greater than 50MPH. Almost no noise at the higher speed even when turning right. No noise during the following conditions, when turning left, in neutral, clutch pushed in, when front end of car jacked up and shifting through all gears and turning right/left at different speeds.. Car is Geo metro 3 cylinder, 5 speed, 221,000 miles. No noise or problems when shifting gears (runs like new). Noise began after replacing drive axles and transmission fluid (used Synchromesh manual transmission fluid recommended in service manual), Replaced drive axles, right wheel bearing, tie rod ends, clutch, flywheel, pilot bearing, throwback release bearing, right and left drive axle seals. My car has 221000 miles. My car has a 5 speed manual transmission.



After reviewing your case I have concluded the left wheel bearing should have been replaced as well. In most cases when you can make the noise change by turning or swerving then a hub bearing is worn. I see you have replaced the right wheel bearing already. I would look to the left wheel bearing to be in need of replacement.

Computer Location 1995 Geo Metro

 Auto Repair Questions, GEO  Comments Off on Computer Location 1995 Geo Metro
Dec 312016

1995 Geo MetroWhere do I locate the brain/computer? I need the computer location.


Engine Computer Location

The ECM/PCM in 1995 and newer models is located behind the glove box.

Computer Location Diagram

What is an Engine Computer?

The PCM/ECM works by receiving inputs from various sensors, comparing the information received, and making the necessary corrections. The output side of the computer actually supplies ground to the majority of the components. By controlling how long the component is grounded. In conclusion the computer is able to make all the necessary corrections. For example the pulse width of the injector(s).

Engine Computer Replacement

  1. Disconnect the negative battery cable.
  2. Locate the ECM/PCM.
    • A.On models through 1994, the ECM is located on the drivers side of the vehicle. It is behind and below the instrument panel.
    • B.On 1995 and newer models the ECM/PCM is located behind the glove box.
  3. Remove the attaching hardware from the module.
  4. Disconnect the electrical connectors.
  1. Connect the electrical connectors.
  2. Mount the module and screw into place.
  3. Connect the negative battery cable.

1993 Geo Prizm

 Auto Repair Questions, GEO  Comments Off on 1993 Geo Prizm
Jun 082016

1993 GEO PrizmSo, about 1-2 months ago, my car started cutting out on acceleration. I noticed a bit of electrical power loss when idling. There was a sound coming from the engine that sounded like the belt squealing when I would turn the wheel but would stop when the engine warmed up. Then the battery died one day for no apparent reason. Now the engine is cutting out a lot more and there is a chirping noise and the squealing doesn’t stop when the car is warmed up. What could it be and where should I start to fix this problem?


The belts make squealing noises. This can be from exposure to coolant or a pulley or belt seizing. I would remove the belt and check to see if the pulleys are seized, possibly the alternator since you have been having battery issues. Low voltage will impact the engines ability to run properly.

Jul 252015

My car starts up easily in the am. But if I drive it 5 miles or more and ki it to go in the store and start it back up it spins over and over and eventually it will start. Also it idles real rough is coughs and sputters it only has 116,000 mi on it. I filled up the gas tank the other day ($25) and it only went 113 mi til empty. Sometimes it won’t idle enuf to keep it run ing and sometimes, like today at the drive thru it idled up so high I thought it would just take off. I have replaced the fuel pump, battery, all the fluids, check engine life comes on and off. Mostly on. now my mechanic Wants to put on a new computer and a sensor? Help! I only paid $750 for the car but have spent almost that much on repairs. Please help. I was married to mechanic for 24 years but he had kids with his exwife during our marriage so I can’t take my car to him for advice….lol.

2002 Geo Prizm DRL relay

 GEO  Comments Off on 2002 Geo Prizm DRL relay
Mar 262015

2002 geo prizm

How do I replace the DRL relay behind the glove box, doni have do disable the airbag system ?

Just unplug the relay and pop in a new one. The DRL(Daytime Running Lights) relay has nothing to do with the Air Bag. So, no you do not need to disable the airbag system.

Daytime Running Lamps (DRL) Relay Replacement

Removal Procedure

2000 Prizim DRL location diagram

•Remove the lid from fuse and relay block #3.
•Remove the DRL relay from fuse and relay block #3 (1). Refer to the fuse and relay block lid for identification of the relays.

Nov 072014

Why would my car/engine start shaking badly right after braking hard for a red light? It shook once i came to a complete stop only. it did not shake before. is something major going out soon. it freaked me out. thought my car was done for. help!