CA not reving above 4k

rat · Post by **rat** » Sun Jun 12, 2011 7:31 pm

Car is std and has stood for many years. Even in neutral it hits a limiter at 4k

djtreble · Post by **djtreble** » Sun Jun 12, 2011 7:50 pm

Have you serviced the car? I'd suggest that and cleaning the air flow meter with carb cleaner

rat · Post by **rat** » Mon Jun 13, 2011 7:38 am

yes but havent done the afm will try tonight.

Not maybe the engine temp sensor that is putting the car in a safe map?

djtreble · Post by **djtreble** » Mon Jun 13, 2011 8:22 am

It could be many things but start off with easy items first.

One of my s13's did this and it was the afm. Best thing is to try clean it and if that doesn't work then test it with a known working one as the unit itself might be faulty.

Daniel · Post by **Daniel** » Mon Jun 13, 2011 2:19 pm

you have checked for ecu fault codes havent you? This is for the standard S13 right?

I drove around for a while with a faulty temp sensor, it still drove fine not as good as when its working but not so bad that you would think there's a real problem.

Enzio · Post by **Enzio** » Mon Jun 13, 2011 2:45 pm

A faulty engine coolant temp sensor will not put the car in limp mode.

It will only keep the car in the over-rich start up map by assuming the car's operating temp is below normal.

Have to agree, check the error codes. But if it's in limp mode it's probably the MAF.

KD21sx · Post by **KD21sx** » Mon Jun 13, 2011 3:42 pm

i had same problem on sr found that it was a faulty crank sensor...

POWDER · Post by **POWDER** » Mon Jun 13, 2011 7:49 pm

Hey dude, check if the temp guage rises, that should thell u if it working, Djtrebble is right at assumin the MAF they can cause bad limp mode, CAS can also cause issues like that, mark the CAS for where it is then tyr advancing it a bit to see if that's the problem.

Codes will give u better idea though.....

Adrian · Post by **Adrian** » Mon Jun 13, 2011 9:23 pm

Hey rat mine did the same when I had a boost leak caused from a old boost pipe that cracked

Enzio · Post by **Enzio** » Tue Jun 14, 2011 9:55 am

POWDER wrote:Hey dude, check if the temp guage rises, that should thell u if it working,

Wrong. There are two seperate sensors:
- Engine temp sensor with the bosch type connector that goes to the ECU
- Cluster temp sensor which has a blade conenction that goes to the back of the cluster

POWDER · Post by **POWDER** » Tue Jun 14, 2011 1:08 pm

Enzio wrote:
POWDER wrote:Hey dude, check if the temp guage rises, that should thell u if it working,
Wrong. There are two seperate sensors:
- Engine temp sensor with the bosch type connector that goes to the ECU
- Cluster temp sensor which has a blade conenction that goes to the back of the cluster

Appologies guy, completely forgot about that.... Enzio is right there..... There is also an airtemp sensor built into ur MAF which could be messin u arround, but don't think it would cause such harsh problems, I have a spare MAF though if U would like to test the theory.....

rat · Post by **rat** » Tue Jun 14, 2011 2:28 pm

thanks will let you know

POWDER · Post by **POWDER** » Tue Jun 14, 2011 4:51 pm

rat wrote:thanks will let you know

Will be sending some stuff down to Mical on friday or monday so if u need just shout.

poizen · Post by **poizen** » Tue Jun 14, 2011 5:00 pm

POWDER wrote:
rat wrote:thanks will let you know
Will be sending some stuff down to Mical on friday or monday so if u need just shout.

Yay I can't wait

rat · Post by **rat** » Wed Jun 15, 2011 7:42 am

no faults came up on the std ecu, cleaned the afm out. Need a working battery to start the car. Anyone know the std size for the sx?

*Nissan 200SX Club - South Africa

CA not reving above 4k

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