| Pcolaboy |
Fri Jul 15, 2022 12:05 pm |
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While my girlfriend was driving around town this afternoon, suddenly the oil pressure warning light began beeping and simultaneously the tachometer was going completely haywire.
When I examined it, the motor was running smooth as silk at any RPM and the Oil Pressure warning came on after only a 30 seconds of running at idle upon startup and never stopped. Also, the tachometer has now completely stopped working at all. No ticking of lifters while running, or leaking oil detected.
Is there any commonality between oil pressure sensor and tachometer? Really odd behavior. |
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| mikemtnbike |
Fri Jul 15, 2022 8:03 pm |
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These two things are not directly linked except they’re both part of the gauge cluster(AFAIK). I’d assume it was that and problem solve from there.
What year van? If it’s 95 or earlier, for sure separate except at cluster. |
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| EuroTec |
Sat Jul 16, 2022 4:28 am |
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Pcolaboy wrote: While my girlfriend was driving around town this afternoon, suddenly the oil pressure warning light began beeping and simultaneously the tachometer was going completely haywire.
When I examined it, the motor was running smooth as silk at any RPM and the Oil Pressure warning came on after only a 30 seconds of running at idle upon startup and never stopped. Also, the tachometer has now completely stopped working at all. No ticking of lifters while running, or leaking oil detected.
Is there any commonality between oil pressure sensor and tachometer? Really odd behavior.
Post up the year and I'll look up some wiring diagrams on AllData. I would suspect instrument cluster faults. |
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| workvan |
Sat Jun 29, 2024 1:18 am |
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wanted to share my experience for anyone that arrived at this post trying to solve what seems like a somewhat common problem. In my case (2003 eurovan) the abs and traction control light also illuminated and the transmission went into limp mode (3rd gear only in drive). Transmission code was implausible accelerator pedal position input.
my problem was the plug at the abs unit in front of the battery in the engine compartment. This is robustly designed and sealed as you would expect of a brake component but none the less developed a bad connection at the ground wire pin that comes from the nearby battery. The plug is released by sliding the outer clamping sleeve upward which pulls the plug from the abs unit. Evidently this is the ground for the oil pressure sensor and crank position sensor/tachometer as well as the abs and traction control. I cleaned it with electrical cleaner and applied some liquid moly electrical spray.
Hope this is helpful |
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| lbl_247 |
Sun May 04, 2025 1:04 pm |
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| My 03 GLS has suddenly developed the same problems. Low pressure, tach, ABS and ESP. Could you give me a bit finer developed of where to found this abs module? Pics would help. |
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| lbl_247 |
Mon May 05, 2025 9:59 am |
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lbl_247 wrote: My 03 GLS has suddenly developed the same problems. Low pressure, tach, ABS and ESP. Could you give me a bit finer *idea of where to found this abs module? Pics would help.
Found your other post about the abs module.
This morning pulled the plug. Tested continuity on ground pin. That was OK. Drive around block and all was the same but now no PRNDL and in limp mode.
Pulled the plug againm cleaned 2ith electrical contact spray and applied die-electric grease.
ABS and ESP lights are on, no PRNDL, out of limp mode but tach is working and no oil pressure warning. |
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