1997 Volkswagen Jetta Hi On 97 Vw Lost Tach Oil Light Started Flash

1997 VOLKSWAGEN JETTA
170,000 MILES
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CHRISVB
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  • 6 POSTS
Both issues appeared at the same time , i checked the oil pressure (at the head) at 35 lbs at 1000rpm . as it is a 1.9 IDI diesel , the tach is fed from an alternator signal at the w terminal. from others i hear that the tach and oil sending wiring may be connected .
do you have any suggestions that will narrow down the cause of the problem??
Dec 17, 2011 at 8:08 PM
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HMAC300
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check your fuses and relays as the oil pressure runs through that. you may just have afuse blown. the tach is connected to theoil level sensor.
Dec 17, 2011 at 9:27 PM
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CHRISVB
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thanks , i'll do that . i also checked and cleaned the grounds under the batterie tray and engine ground , all fine.
Dec 17, 2011 at 9:45 PM
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CHRISVB
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o.k. , found the problem , the w wire from alternator to the tach had a break near the starter harness . fixed it and both tach and oil light issue resolved.
Dec 19, 2011 at 10:44 PM
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