1990 Volkswagen Jetta Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1990 Volkswagen Jetta

1990 Volkswagen Jetta Problems

Shifting issues due to internal problems in high mileage automatic transmissions can be difficult to resolve without transmission replacement.

Reverse gear failures and noise in the manual transmission models are common.

Electrical issues that are difficult to diagnose—and sometimes intermittent—are typically due to ground wiring issues. The most troublesome ground locations are under the battery or at the engine.

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1990 Volkswagen Jetta Questions

(I know I put 1990, but it IS a 1985. It would not let me go past 1990.) When the car is cold, it has some issues turning on for some reason. I don't know what it could be, I'm no car specialist. It's not the battery because that was already replaced. Any ideas?

I have replaced all temp pickups and fan switch, thermostat (drilled 3mm holes X2), have replaced the reservoir tank.
While thermostat cap was off, checked impeller, used torch and screwdriver to c if impeller is broken or loose (100%). NOT loosing water, no oil in water, no vapor out of exhaust...

backfiring also the idle has dropped down to wear the engine will die out when idling.whats wrong.....

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1990 Volkswagen Jetta Recalls

CERTAIN HYDRAULIC BRAKE HOSES, P/N 171.611.107B, SOLD AS REPLACEMENT EQUIPMENT FOR 1975-1985 VOLKSWAGEN (VW) RABBIT; 1985-1992 VW GOLF; AND 1980-1992 VW JETTA PASSENGER VEHICLES. POSSIBLE BRAKE HOSE RUPTURE COULD OCCUR WHICH FAILS TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY S...AN ENGINE PREHEATING TUBE MAY NOT BE PROPERLY SUPPORTED DUE TO A MISSING SUPPORT BRACKET, CAUSING THE PREHEATING TUBE TO CHAFE AGAINST THE RIGHT FRONT METAL BRAKE LINE. THIS CAN DAMAGE THE HYDRAULIC LINE, CAUSING BRAKE FLUID LEAKAGE AND DIMINISHED BRAKING IN ONE BRAKE CIRCUIT.THE END CAP CONNECTING THE HEAT EXCHANGER'S CORE TO THE ENGINE COOLING SYSTEM COULD RUPTURE AND ALLOW HOT COOLANT TO ESCAPE INTO THE PASSENGER COMPARTMENT.

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1990 Volkswagen Jetta Reviews

I bought this car for 500 dollars. since then i have put in low compression pistons and added a turbo kit. interior is in mint condition. 2 1000 watt 10" pioneer subwoofers, 1000 watt sony xplod amp, and 2 rockford fosgate punches mids. very fast little car. all brake lines were rusted out and needed repaired but that is the only repairs needed. 5 speed. best car i have ever owned.

This has a pretty good bread and butter sort of car.Not exciting at all , but it runs and runs.Fairly comfortable , not a great performer , but easy enough to keep up.The interior shows its age , I put tires on it now and again.Biggest expense has been timing belt and water pump replacement.A/C went south awhole back but still a good daily driver.

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