I’ve got a 97 LX450. When I come up to a stop and turn on the turn signal, my D light dims a bit to the rhythm of the turn signal. Also, the headlights dim a bit when I operate the power windows. Is this a ground issue? If so, what connections should I check?
Electrical Question on 97LX450
- Thread starter Indiana80
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
Ground wires, but more likely a weak alternator.
When sitting at a light with headlights on and turn signal on, does it start to click or stutter and hear a buzzing? That would be low voltage.
I have an UltraGauge installed on my dash to watch this exact scenario when the alternator starts to get weak.
When sitting at a light with headlights on and turn signal on, does it start to click or stutter and hear a buzzing? That would be low voltage.
I have an UltraGauge installed on my dash to watch this exact scenario when the alternator starts to get weak.
My rig did this, than I installed the updated slee wiring harness and the headlights stopped dimming when rolling the windows up or whenever the bass hit.
sleeoffroad.com
SLEE - 9005/9006 Headlight Upgrade Harness - New and Improved! - Slee Off Road
Made in the USA TXL wire – high heat resistance, abrasion resistant, chemical resistant, highly flexible Genuine Delphi sealed headlamp connectors Techflex abrasion resistant braided sleeving with ends terminated with shrink tube Beuler 40 amp (60 peak) relays – US sourced Sealed blade fuses...
sleeoffroad.com
- Thread starter
- #4
No click, stutter, or buzz. I have an Ultra Gauge, as well. I’ll set to monitor voltage. While I’ve got an ultra gauge user engaged, I’ve got another question…do you ever monitor short term and long term fuel trim? If so, what values do you see for STFT and LTFT? My LTFT is usually around +10 (+/-2) and STFT is always between -5 and +5. With ethanol-free gas I see LTFT around +7 to +9. Do these readings seem normal? I see FSM says +/- 20 FT readings are OK.
I don't monitor fuel trim, but I occasionally monitor my O2 sensors.
I mostly monitor speed, RPM, temp, voltage.
I'll see if I can find it and let you know. It won't be until Tuesday or Wednesday though. I've got about 4 hours of driving each day.
- Thread starter
- #10
Awesome! I live in the salt belt- Indiana. Daily most days in warm months. Store in winter. If you could grab your fuel trims, I’d appreciate it. Are you running original engine? I’ve never tracked my overall MPGs, but I will next time I fuel. I’m running a 2” lift and 295 tires with ARB bull bar. Can’t think my MPGs are much different than yours.
My headlights would dim in time with the turn signals. Even with a rebuilt alternator.
I upgraded to a Sequoia 150A alternator with Photoman's bracket and pulley and never had a problem again. It never drops below ~13.4V, even at idle.
Nope. I believe that the Photoman bracket is currently unavailable, but it's supposed to be available again soon. The alternator part numbers for the 130 and 150 amp alternators can be found in a thread here. There's also a rumor that a Jaguar alternator might be easily adaptable.
I carry a lot of tools and parts with me for job sites and fabrication shops. Most of mileage is expensed each year.
I believe it's made by Denso. It just happens to be used in Jaguars.
I use the same gasoline that Jaguars use, too...