Why does it feel as though it's going to die as I am at idle in park and/or while in gear sometimes?
Lack of power during acceleration sometimes. New battery and altenator. New EGR Valve, fixed main relay board hot start issue, other relays, 2nd altenator with warranty. Check eng light on/ TCS light on again
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When you say shopping you mean Stalling right. If yes then the usual cause is a failing Relay 109 which is the main power relay . The early golf had a grey relay which failed due to dry solder joints etc the modified black relay was issued to elevate the issue.
Relay 109 supplies power to these ,
Glow plug relay
- Fuse 32
Fuel quantity adjuster
- Fuse 34
Cold start injector
Waste gate bypass regulator valve (N75)
Change over valve (N239)
EGR vacuum regulator valve (N18)
Mass air flow sensor (G70)
- Fuse 43
Clutch vacuum vent valve (if equipped)
Brake vacuum vent valve
Relays for preheating coolant (if equipped)
Crankcase ventilation heating element
The ECM supplies power (and sometime ground as well) for:
Fuel cutoff valve
Cruise control switch
Manifold (intake) air pressure/Intake air temperature sensor
Needle lift sensor
Engine speed sensor
Engine coolant sensor
Closed throttle position switch (part of "go" pedal)
Kickdown switch (part of "go" pedal)
Throttle position switch (part of "go" pedal)
Fuel temperature sensor
Modulating piston displacement sensor
The ECM also communicates to the instrument cluster electronics and transmission control module (on automatics).
As a result of this, you can see why if the relay starts to cause power to flicker, or voltage drops, for all of these components, the results can be "unpredicatable" and none of them desireable.
Try tapping and wiggling the EFI main relay. Camrys this age will sometimes develop broken contacts in the EFI main relay base, the socket it sits in. When contact is lost, the engine just dies, as no power is getting to the ECU. You will know if this is so because the check engine light does not glow when you first turn on the ignition.
Hi Bret, Most modern vehicles have an engine main relay. The relay in question turns off all auxiliary circuits for the starting operation, (when you turn the key to the start position) which consumes more power than any other operation. I would suspect a problem with the wiring to that relay. A loose or bad connection at the base or to the base. The relay in question will usually be a five pin normally open normally closed relay. It should be identified by the directory printed onto the plastic cover of the relay / fuse cover. Also check the secondary connections to the battery. Regards John
A common problem with this year Honda is the main relay becomes hot and the internal connections open up, causing a no start condition. I am assuming everything else is in good working condition. The main relay is located on the driverside kick panel up about 12 inches from the floor, mounted with a single bolt and looks like this;
That is exactly what a defective Main relay will do. The reason is there are two circuits that run thru this relay; One circuit is the fuel injector circuit and the second is the fuel pump circuit. This creates heat and when the relay gets old, it starts to fail. I have removed relays in the past, and placed them in a freezer for about 30 seconds, reinstalled them and the car would start. This was a temporary fix and replacing the relay will cure your no start issue. During hot summer weather is when this issue rears its ugly head. You can also open all the windows to allow the inside of the car to cool down a bit, and then try to start it.
Al, this truck has a regulator locted inside the altenator, it also has a relay located in the power distribution box under the hood, see your owners manual for exact location, to verify an no charging problem, start the truck and measure the voltage at the battery, it should read 13.5v-14.5v, if not then the altenator is not working, most common problem is regulator failure requiring altenator replacement, hope this helps, let me know
how often do u drive ,i use this remedy to cure flooded engines,which can occur in coldre weather mainly if started then turened off immediatly,weak battery/lack of use,or if the accelerater is depress when starting.