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electrical
49
COOLANT TEMPERATURE SENSORS
Any number of "poor running" conditions can be
caused by a bad coolant temp sensor. Sometimes it's
easy to diagnose - if the car runs poorly when cold but
fine when it's warm (or vice versa) it's probably the temp
sensor. Likewise, if your temperature gauge on the dash
stops working, but everything else works fine, it's prob-
ably a sensor. Sometimes, though, it's harder to diagnose
- the car won't start, poor fuel economy, rough running
- these can all be caused by a bad temp sensor. Temp sen-
sors are held in by a single clip and are easy to replace.
Since all the sensors are the same size, the easiest way to
identify the sensor when ordering is to pull the plug and
note the color of the sensor and the number of pins on the
connector and then match it up from the list below!
Color Pins
Part#
Our Price
Grey & white
2 #SN13315
$
15.
95
Black & yellow
4 #SN16802
$
19.
95
Blue & white
4 #SN18804
$
24.
95
Blue
2 #SN13313
$
19.
95
Black and white
2 #SN18805
$
29.
95
Brown 4 #SN18806
$
19.
95
Black & green
2 #SN18807
$
39.
95
Don't forget clips and O-rings!
Clips
#SN19686
$
1.
95
O-Ring
#SN16285
$
1.
95
Sensor, 16V `86-92
#SN15519 . . . . . . . . . . . . . . . . . . . . . .
$
29.
95
Sensor, Water neck G/J `83-84
#SN37818 . . . . . . . . . . . . . . . . . . . . . . .
$
39.
95
On Hose Connector Rabbit `81-84 and others
(pipe with red connector)
#SN3057. . . . . . . . . . . . . . . . . . . . . . . . .
$
31.
95
Golf /Jetta /Passat `93-99.5 . . . . . . . . . . . . . . .
4 Pin (black/yellow)
#SN16802. . . . . . . . . . . . . . . . . . . . . . . .
$
19.
95
Sensor blue plastic 2 pin
Most `88-94 Golf/Jetta/Passat
#SN13313 . . . . . . . . . . . . . . . . . . . . . . .
$
19.
95
Golf/Jetta/New Beetle/Passat `99-'05
4 pin Blue . . . . . . . . . . #SN18309. . . . .
$
19.
95
4 pin Brown . . . . . . . . .#SN19836 . . . .
$
19.
95
All the water-cooled gaspowered
VW cars from `81-up use a coolant-
temp sensor to tell the fuel-injection
computer what temperature the engine
is running at. The sensor does this by
sending the computer a resistance signal (in ohms)
that changes with temperature. The computer then
adjusts the amount of fuel sent to the engine based
on this signal. The symptoms of a bad coolant
temp. sensor can be: an engine that starts hard or
misses when cold but runs fi ne when warm. Another
symptom is an engine that "loads up" the spark plugs
and runs rich for no apparent reason (ignition good).
You can easily test these sensors with a simple ohm
meter. The resistance values (ohms) are in the
Bentley manual, and a new coolant temp.
sensor is relatively inexpensive. You can
even install it yourself. We have them new
and used.. give us a call!
ELECTRONIC CONTROL
MODULE
The electronic control modules (ECM), or
electronic control units (ECU) are the gather-
ing point for electrical signals that come from
a variety of on-board sensors. These sensors
detect everything engine RPM to temperature,
wheel speed, throttle position, to electrical load,
etc. You get the idea!
These control modules, engine management,
and anti-lock brakes, electronic transmissions,
on-board computers, collect information, and
respond with output in a pre-programmed man-
ner. This pre-programming has given the engi-
neers very precise control over vehicle systems.
Changing this programming (after-market per-
formance "CHIPS) has given the modern "Hot
-rodder" a unique way to improve the vehicle's
performance. But, not necessarily its longev-
ity.
If a control module is malfunctioning, it can
be a serious problem. We take the electronic
components out of good-running vehicles, and
sell them guaranteed to perform as new!
If you or your mechanic have diagnosed a faulty
unit, call us with the part number right off the
part and we'll get you a replacement quick, and
at a great price!
Brains, Brains, Who's
Got The Brains?
*NOTE
ELECTRONIC CONTROL MODULE
Your engine (gas or TDI!) has a control module and if you have an automatic transmission, then your transmission
has one too. These are a little tricky to diagnose and they're not returnable, so make sure that the ECM is actually your
problem before you call. While you're testing it, note the part #, we will need it to ensure we get you the correct one.
Prices vary, but are generally between $250 and $450.
Beetle `75-`79
#SN32373 . . . . . . . . . . . . . . . . . . . . . . .
$
250.
95
Vanagon `80-`83, Aircooled Bus 79 only, w/
manual trans.
#SN32373 . . . . . . . . . . . . . . . . . . . . . . .
$
250.
95
Rabbit/Scirocco `80 -`81
#SN32353 . . . . . . . . . . . . . . . . . . . . . . .
$
100.
95
Rabbit/Jetta/PickUp `82 -`84, GTI `83`84
#SN32354 . . . . . . . . . . . . . . . . . . . . . . .
$
135.
95
Quantum `82 -`84, Scirocco `82-`86, CIS w/
Black Fuel Dist.
#SN32783 . . . . . . . . . . . . . . . . . . . . . . .
$
150.
95
Rabbit GTI/Jetta/Golf `83-`87 (only works w/
CSI fuel systems w/black fuel dist.
#SN36803 . . . . . . . . . . . . . . . . . . . . . . .
$
135.
95
Golf/Jetta `85-`87 Std. CSI-E w/silver Dist.,
Fox `87-`93
#SN32919 . . . . . . . . . . . . . . . . . . . . . . .
$
200.
95
Golf/GTI/Jetta/GLI 8V `85-`88
#SN32920 . . . . . . . . . . . . . . . . . . . . . . .
$
99.
95
Golf/Jetta `88-`92 Digifant w/Digifant Fuel
Injection (non-16 valve)
#SN32358 . . . . . . . . . . . . . . . . . . . . . . .
$
300.
95
Golf/Jetta/Scirocco 16V 1.8L `86- 90` - 16V only
#SN35922 . . . . . . . . . . . . . . . . . . . . . . .
$
300.
95
Jetta `89-`92 w/1.8L 5 Spd. Manual trans. & AC
#SN16125 . . . . . . . . . . . . . . . . . . . . . . .
$
495.
95
Golf/Jetta/Passat `89-`92 16V eng.
#SN16124 . . . . . . . . . . . . . . . . . . . . . . .
$
499.
95
GLI 16V (ABS w/o elec. diff. lock `89-`92, Pas-
sat 16V `90-`94
#SN33840 . . . . . . . . . . . . . . . . . . . . . . .
$
300.
95
Golf/Jetta `93-`98 2.0 8V
#SN38072 . . . . . . . . . . . . . . . . . . . . . . .
$
350.
95
Corrado `93.5-`94 VR6 manual trans only - coil
pack ignition only
#SN18174. . . . . . . . . . . . . . . . . . . . . . .
$
400.
95
Passat Auto Trans. `90-`93
#SN38191 . . . . . . . . . . . . . . . . . . . . . . .
$
300.
95
Corraddo ABS W/electonic diff. Lock VR6 `92-
`95, Passat VR6 `93-`94
#SN38847 . . . . . . . . . . . . . . . . . . . . . . .
$
385.
95
Passat VR6 `96-`97
#SN38885 . . . . . . . . . . . . . . . . . . . . . . .
$
350.
95
Euro-spec TDI AFN code Golf/Jetta III `96-`99
w/immobilizer
#SN18376 . . . . . . . . . . . . . . . . . . . . . . .
$
399.
95