20 Most Recent 1987 Volkswagen Jetta - Page 2 Questions & Answers

1/ Massive air leak in intake pipe to throttle body.

2/ Bad electrical wire to rear of cylinder head as engine rocks on it's mounts.

3/ Oil pressure too high holding valves open....new oil pump required.

4/ Loose/cracked connection of idle air hose under manifold.

You can replace it with rubber fuel line and clamp it to the existing line where you cut the old off.

This car used 13 inch wheels

Sound like catalytic is plugged.

cut it off is only answer ,unless you order new keys from dealer

The first two things I would check would be for vacuum leaks. (Dry-rotted vacuum hoses, fittings, etc.) Another thing you'll want to check is your EGR valve. When an EGR valve sticks open, it will allow exhaust gases to enter the intake, causing rough idle and sometimes stalls. While the engine is running, tap on the EGR valve gently with the ****-end of a screwdriver and see if the problem clears up.

Being this old of a car, I'm willing to bet it's a vacuum leak, but you're the one with your eyes on it. :)

Good luck and I hope this helps! :)

is the clutch engaging & the release bearing is working. have you check fluid in the cltch resovior

It could be the upshift indicator control unit relay (relay #4, second row of relays, 4th from the right). There is also vacuum switch upshift indicator, (usually connected inline of the vacuum line going to the distributor advance, with an electrical plug connected to it). Or it could be transmission switch/upshift indicator, (located on top of the transmission, towards the back of the transmission). I don't think it would be a fuse, because the upshift control unit relay is powered by ignition battery.

I would check the fuel filter, which is under the car, below the passenger side rear seat.

have you checked the sump breather pipe is connected to the air filter housing???and that the air filter is not blocked with oil.....same effect...

Depending on your engine some have one and some have 2. A look under the car will verify how many are installed,

the O2 sensor is located just off the engine in the exhaust header pipe before the catalytic converter, u may have to get under the car to see it, here is a picture of a typical O2 sensor for the Jetta engine

The 'stick' may be getting loose or rusty. Replace or tighten as necessary underneath the car where it pivots.

If this is ok, then the transmission has a problem.

this should help let me know if not k

It is below the A/C compressor, above the power
steering pump. It's the silver pump in the picture below with the 3 gold bolts in it. You'll need to remove the belts, water pump pulley,timing cover, it will help to get to stuff thru the passenger side wheel well.

it means the O2 sensor needs to be replaced

You need to change engine coolant temperature sensor/ECT/.Black with 2 or 4 pins depence of a type of the engine.Some of new models use blue one also with 4 pins.

varies but 28 psi minimum but to keep the edges of your tyres from wearing I recommend 34-38 psi if youre happy with the ride

there is a reset button you need to push to reset light, it is under hood on fire wall. 1st carefully lift straight up on overflow tank or fill tank for antifreeze( it sets in a v bracket you may have to wiggle it or bump it ) directly behind it is the reset button push in.