1991 and 1997 VW Jetta Radiator??

I found this. I believe there is no fuse because the signal comes from the Engine Control Module.

https://www.vehiclehistory.com/questions/whats-the-2009-vw-jetta-fan-relay-location-289725

videos and images

https://www.google.com/search?q=2009+VW+Jetta+2.5.+Radiator+Cooling+Fan+Relay+location

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Fuel Air sensor is the most likely cause, but can be other things.

P1151 Error Code ' VW Vortex - Volkswagen Forum

https://www.vwvortex.com > ... > Golf IV & Jetta IV
Aug 6, 2014 - Can't pass my emissions inspection with my check engine light on. Code is P1151. Possible causes: MAF Sensor, O2 Sensor, Vacuum leak.
Missing: DOC ‎' Must include: DOC

pm151: i hve 2003 jeta VR6..engine light..fuel air - JustAnswer

https://www.justanswer.com > ... > Volkswagen Questions
Sept 11, 2009 - I have 2003 Jetta VR6 and the engine light is on and have a code reading of P1151 fuel air managing how can I trouble - Answered by a ...
1 answer · 17559/P1151/004433 - Long Term Fuel Trim Additive Air; Bank 1; Range 1: System too Lean The ECM is trying to compensate for an excessively lean mixture. ...

2001 Jetta GLS VR6 CEL Code P1151 ' VW Forum

https://www.vwforum.com > ... > MK4
Jul 5, 2009 - error code P1151 "bank1,Long Term Fuel Trim, Range 1 leanness Lower Limit Exceeded". Explanation - fuel pressure or volume. Probable cause
Missing: 2.8 ‎DOC

p1151 code My 2001 vw jetta glx vr6 has a p1151 code. What

https://www.fixya.com > ... > Volkswagen
Nov 16, 2019 - p1151 code My 2001 vw jetta glx vr6 has a p1151 code. What is the problem I need to fix? - Volkswagen Cars & Trucks question.
I m geting an engine alarm and the code is P1151 . - Fixya
Nov 19, 2019
2003 Jetta GLI throwing P1151 Indicating a lean condition
Sept 2, 2019
SOLVED: I need the Serpentine belt diagram for a 2009 - Fixya
Apr 17, 2021
I need torque specs 14B coaster bus.cyl head and - Fixya
Apr 14, 2017
More results from www.fixya.com Missing: DOC ‎' Must include: DOC

2001 Jetta GLS VR6 CEL Code P1151 - Volkswagen Forum

https://volkswagenforum.com > forum > 2001-jetta-gls-...
error code P1151 "bank1,Long Term Fuel Trim, Range 1 leanness Lower Limit Exceeded". Explanation - fuel pressure or volume. Probable cause. Check engine for ...
Missing: GLX ‎2.8 ‎DOC

P1151 code and white smoke on idle - The VR6 Owners Club

https://www.vr6oc.com > ... > Newbies Corner
Mar 14, 2020 - Hi, i just recently bought a 2002 vw jetta vr6 24v with 123000 miles on it. Car runs good and sounds healthy but just here recently ive been ...

Go there:
https://www.justanswer.com/vw-volkswagen/2wsrd-picture-diagram-timing-settings-vw-jetta-95-2-0-engine.html

VW family engine thermostat is behind the lower coolant inlet . It will be either a plastic or aluminum housing.

To find it...open engine lid and look down at bottom of radiator. You will see a rubber hose from the base of the radiator to the engine at the left side looking in. The hose is attached to the housing that holds in the thermostat.

FYI. Never run a VW engine without a thermostat in place or overheating will occur ....really !

The exact locations and picture of Engine Coolant Temp (ECT) sensors on 2004 VW Jetta TDI:

1. ECT sensor 1 placed on cylinder head:




2. ECT sensor 2 placed on the left bottom side of the radiator:

the clutch may burn out on those gear, check the fluid if it smell burn

There are two coolant temp sensors. One by the oil filler tube and one near the bottom radiator hose near the radiator.
When you flushed the coolant did you replace with VW rated G12 coloant? Very Important! - You can't use over the counter coolant - it'll cause sludge in your system. You have to use G12...

Hope this helps!
Please rate/vote! Thanx!

thermostat replace temp sensor its cheap i hope your water pump is not bad you could mess engine up if you keep on running car and is overheating.

You've lost engine coolant somewhere, and need to fill the engine back up with the VW special G12 coolant.

Then find the leak, which will be in one or more of the following places -
Water hoses to heater core, including any other coolant carrying hoses in the engine compartment
Radiator hoses
Plastic manifold bolted to side of engine which is known to leak (have replaced on an '01 VW Beetle, and an '02 Jetta, both members of our family in the past few years.).
Overflow reservoir cracked
Radiator leak.

Reply back what you find. If the engine got too hot, you may need to have the thermostat replaced.

Check for a switch at lower part of rad. Should see a wire harness & plug on a sensor at bottom of rad. This sensor/switch also operates fan on/off according to coolant temperature. You may need to disconnect battery to get at it safely.