Thread: Bogging roblem please HELP

Hey forum members. well hope im not bothering you all too much for a bit more help. if you have seen some of my past threads you may have noticed i have been coming across a problem after another.

this time my problem is bogging below 3,000rpm. Im sitting at a dead stop and start to accelerate when i start to get this Bogging problem,once i pass around 3,000RPM's the car feels like nothing has ever been a problem.

I took my time to make a quick little video last night.Hopefully the video helps.(In the video you will see me tapping the gas a bit hard and it will show hesitation and then jump up,then later on in the video i hold the gas just around 3k RPM and give it gas and it jump with no hesitation)

BTW before you ask.
This is a 1991 sentra se-r(b13 to be simple) haha with a jdm sr20de (in case you need to know that)

Yes i cleaned up the IACV
Yes i have not re-grounded the Mass Air Flow(AKA MAF)
Yes i checked my timing(set to 17*)
Yes im going to try adjusting the tps to .44 (closed) and 4.0? opened (numbers seem correct? last time i did it i think i had bad connection since the numbers kept jumping)
Yes i do have s4 cams
Yes i have replaced fuel pump
Yes i have checked for vacume leaks (and came across none)
Yes plugs are all plugged up
Compression is good
AND Yes i DID SEARCH haha

Recent update;
replaced the TPS
i have swapped out my old wire harness since after putting new coolant temp sensor and knock sensor should up to be bad(still nothing)

i shall see when chris has free time so i can hook up the laptop again and see what the laptop brings up after new harness



ANY HELP WILL BE HIGHLY APPRECIATED

Try replacing your MAP sensor.

It really looks like a TPS sensor issue to me. My SR20 did the same thing a while back and I think I concluded it was an issue with the TPS. Don't just check it at the intake manifold - go to the ECU and make sure you're getting the same reading there as well in case there's a wiring issue. BTW is this a B13, B14, or B15?

Good luck!

^^^ It's a B13, I thought the tech on the left side would give it away

lol oh silly russian...... thnx

yes this is a 91 se-r (b13)

ddnt mention it before sorry

make sure your idle control valve fuse isnt missing or blown.. the same thing was happening to mine, the fuse was blown replaced it, and idle and drivabilty was back to normal... its in your fuse box inside labled -electronics(B)-..

good luck...

definitly adjust the tps to see what that does

WHY THE HELL!!!! i can't believe i never thought about checkin the fuse...IF there is a fure for it THNX MUCH FOR THE TIP

well the TPS was deff a bit off....im going to adjust and make a write up on it tomorrow..im sure it can help out others even if it doesn't fix my problem

thnx for help guys keep other idea comin

bump for HELP with updates...


i got an oem fuel pump (sr20monkey ). but have to say im still upset ,the problem did not go away neither did it get better ..

any other suggestions?

help....