'89 Sentra - Infamous Nissan

Stinky · 02-20-2022, 05:58 AM

I've got an '89 Sentra and when it is cold it revs up rather high, then when it warms up after a minute or so, it really screams, at least 2,000rpm.

Once it warms up, it idles like it should.

Where should I look?

alabama_lowlife · 02-20-2022, 12:32 PM

I don’t know very much about Sentras but I’d check the coolant temperature sensor connection for corrosion and security.

PorknBeans · 02-20-2022, 04:29 PM

Sounds like an air leak until the surrounding metal or material expands and either stops the leak or reduces it to where you can’t hear it anymore.

You should check the throttle body’s base gasket. There’s normally one there that should be changed with regular maintenance to avoid air leaks and seized engines.

Find a service manual and read it. You will learn a lot about your vehicle and be able to fix problems.

YEPEE · 02-24-2022, 12:02 AM

wow, trying to remember, should be 2 FICD (fast idle control device,pt#22664-84A10) solenoids in the base of the throttle body, should have one harness going to both, it also has a "wax kit"(pt#16391-84A00) which will produce a high idle until it warms up, see if any of that helps...

YEPEE · 02-28-2022, 10:51 PM

any progress??

Stinky · 03-01-2022, 03:15 AM

Not yet, I have 2 brake jobs (BJs) ahead of it. One of the BJs is on the Sentra, it needs rear shoes.

Stinky · 04-05-2022, 12:23 AM

My daughter reports that after changing about 6' of vacuum line, that things are much different. Imagine that....31 year old vacuum hose leaks.

YEPEE · 04-26-2022, 11:08 PM

I would have thought 32 maybe 33yrs... they let loose a little early huh.. lol

ahardb0dy · 04-29-2022, 04:13 PM

Always recommend replacing all the vacuum lines on older vehicles, a small crack in a hose can cause issues.

Thermal element may be cause of high idle as was mentioned.

I had a base 90 Sentra for a while:

PorknBeans · 04-29-2022, 07:14 PM

My buddy in high school had an ‘89 Sentra with a 5-spd. and white exterior. That thing took us everywhere!

Sorry no pics. But looks just like aHardb0dy’s former Sentra.

Nissan has/had a 1.6L turbocharged Sentra a few years back. That would be fun!

02-20-2022, 04:29 PM	#3
PorknBeans Join Date: Dec 2019 Location: Where I can see the air I breathe... Posts: 844 Vehicle: 1997 XE King Cab with 3 pedals, KA24E & 2WD, Y’all Thanks: 82 Thanked 251 Times in 209 Posts	Sounds like an air leak until the surrounding metal or material expands and either stops the leak or reduces it to where you can’t hear it anymore. You should check the throttle body’s base gasket. There’s normally one there that should be changed with regular maintenance to avoid air leaks and seized engines. Find a service manual and read it. You will learn a lot about your vehicle and be able to fix problems. __________________

04-29-2022, 04:13 PM	#9
ahardb0dy The Post Count Whore Join Date: May 2014 Location: Sorrento, Florida Age: 56 Posts: 8,009 Vehicle: 2017 Nissan Frontier Desert Runner Thanks: 71 Thanked 1,037 Times in 942 Posts	Always recommend replacing all the vacuum lines on older vehicles, a small crack in a hose can cause issues. Thermal element may be cause of high idle as was mentioned. I had a base 90 Sentra for a while: __________________ My name is Tony and I'm a Infamousaholic Current truck - 2017 Nissan Frontier Desert Runner , (formerly owned: 1993 Nissan Hardbody king cab 2wd, 90 Nissan Sentra, 94 Nissan Pathfinder SE 4x4, 05 Nissan Titan, 87 Nissan SE-V6 4x4 king cab, 94 Infiniti Q45t & 80 Datsun 310GX )

04-29-2022, 07:14 PM	#10
PorknBeans Join Date: Dec 2019 Location: Where I can see the air I breathe... Posts: 844 Vehicle: 1997 XE King Cab with 3 pedals, KA24E & 2WD, Y’all Thanks: 82 Thanked 251 Times in 209 Posts	My buddy in high school had an ‘89 Sentra with a 5-spd. and white exterior. That thing took us everywhere! Sorry no pics. But looks just like aHardb0dy’s former Sentra. Nissan has/had a 1.6L turbocharged Sentra a few years back. That would be fun! __________________

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02-20-2022, 05:58 AM	#1
Stinky Join Date: Nov 2019 Location: Whitewater, CO Posts: 128 Vehicle: 86 2wd 720, 86 4x4D21 Thanks: 0 Thanked 12 Times in 12 Posts	'89 Sentra I've got an '89 Sentra and when it is cold it revs up rather high, then when it warms up after a minute or so, it really screams, at least 2,000rpm. Once it warms up, it idles like it should. Where should I look?

02-20-2022, 12:32 PM	#2
alabama_lowlife Owner and Administrator Join Date: Sep 2008 Location: New Brockton, Alabama Age: 42 Posts: 10,877 Vehicle: 2012 370Z, 1970 Datsun 521, 1995 Nissan Hardbody x2, 1994 Hardbody Thanks: 1,123 Thanked 2,261 Times in 1,858 Posts	I don’t know very much about Sentras but I’d check the coolant temperature sensor connection for corrosion and security. __________________

02-24-2022, 12:02 AM	#4
YEPEE Join Date: Mar 2013 Location: Phoenix Posts: 1,973 Vehicle: 86.5 HB,95 HB, 02 Sentra Spec-V Thanks: 325 Thanked 364 Times in 310 Posts	wow, trying to remember, should be 2 FICD (fast idle control device,pt#22664-84A10) solenoids in the base of the throttle body, should have one harness going to both, it also has a "wax kit"(pt#16391-84A00) which will produce a high idle until it warms up, see if any of that helps...

02-28-2022, 10:51 PM	#5
YEPEE Join Date: Mar 2013 Location: Phoenix Posts: 1,973 Vehicle: 86.5 HB,95 HB, 02 Sentra Spec-V Thanks: 325 Thanked 364 Times in 310 Posts	any progress??

03-01-2022, 03:15 AM	#6
Stinky Join Date: Nov 2019 Location: Whitewater, CO Posts: 128 Vehicle: 86 2wd 720, 86 4x4D21 Thanks: 0 Thanked 12 Times in 12 Posts	Not yet, I have 2 brake jobs (BJs) ahead of it. One of the BJs is on the Sentra, it needs rear shoes.

04-05-2022, 12:23 AM	#7
Stinky Join Date: Nov 2019 Location: Whitewater, CO Posts: 128 Vehicle: 86 2wd 720, 86 4x4D21 Thanks: 0 Thanked 12 Times in 12 Posts	My daughter reports that after changing about 6' of vacuum line, that things are much different. Imagine that....31 year old vacuum hose leaks.

04-26-2022, 11:08 PM	#8
YEPEE Join Date: Mar 2013 Location: Phoenix Posts: 1,973 Vehicle: 86.5 HB,95 HB, 02 Sentra Spec-V Thanks: 325 Thanked 364 Times in 310 Posts	I would have thought 32 maybe 33yrs... they let loose a little early huh.. lol