ka24e idles, but cant rev at all! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

aurora · 11-06-2008, 03:29 PM

Ive been trying to fix my sohc for a week now, but now im fresh out of ideas.

Basically, i can start my car and idles around 850rpm as it should be. It slowly decreases in idle after a few seconds and dies. While idling, the fuel pressure seems fine (34psi), and theres no bogging or hesitation.

However, when i try reving the engine when its idling, it immediately dies. I cant even get it to go past 1500rpm without immediately dying.

Ive tried changing the cap/rotor, distributor, ignition coil, cleaned up the connections on the coolant temp sensor, maf, and injectors.

I also changed the sparkplugs, cause i was running too rich before, and they were covered with soot and had alittle fuel on them. I adjusted my nismo fpr and now its at the previously mentioned 34psi.

I dont want to keep buying unnecessary parts, so please figure out the solution to my problem!! thanks!

murda-c · 11-06-2008, 03:44 PM

You check the TPS?

aurora · 11-07-2008, 10:40 AM

Quote:

Originally Posted by murda-c

You check the TPS?

I dont have a multimeter, so would running the car without the tps plugged in give me any indication that the tps is faulty?

aurora · 11-09-2008, 01:21 PM

i still cant get my car running, but heres an update:

-i changed my cap/rotor and nothing changed
-i changed the distributor and nothing changed
-i checked timing on the distributor, and it was already good
-nothing changed when unplugging the o2 sensor
-i cleaned up the terminals on the coolant temp sensor, and nothing changed
-i changed the ignition coil and nothing changed

-the car will start but wont idle with the tps unplugged
-the car ran alittle better with the maf unplugged (normally the car will immediately die when revved, but now i can go upto 3000rpm with it unplugged - however, it seems to bog, and struggles to hold anything above 1500rpm

does running better without the maf mean that the maf is the problem?

11-06-2008, 03:29 PM	#1
aurora Join Date: Nov 2003 Location: central nj Posts: 47 Trader Rating: (1) Feedback Score: 1 reviews	ka24e idles, but cant rev at all! Ive been trying to fix my sohc for a week now, but now im fresh out of ideas. Basically, i can start my car and idles around 850rpm as it should be. It slowly decreases in idle after a few seconds and dies. While idling, the fuel pressure seems fine (34psi), and theres no bogging or hesitation. However, when i try reving the engine when its idling, it immediately dies. I cant even get it to go past 1500rpm without immediately dying. Ive tried changing the cap/rotor, distributor, ignition coil, cleaned up the connections on the coolant temp sensor, maf, and injectors. I also changed the sparkplugs, cause i was running too rich before, and they were covered with soot and had alittle fuel on them. I adjusted my nismo fpr and now its at the previously mentioned 34psi. I dont want to keep buying unnecessary parts, so please figure out the solution to my problem!! thanks!

11-06-2008, 03:44 PM	#2
murda-c Post Whore! Join Date: Jan 2007 Location: Montgomery County, MD Age: 33 Posts: 3,197 Trader Rating: (1) Feedback Score: 1 reviews	You check the TPS? __________________

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11-09-2008, 01:21 PM	#4
aurora Join Date: Nov 2003 Location: central nj Posts: 47 Trader Rating: (1) Feedback Score: 1 reviews	i still cant get my car running, but heres an update: -i changed my cap/rotor and nothing changed -i changed the distributor and nothing changed -i checked timing on the distributor, and it was already good -nothing changed when unplugging the o2 sensor -i cleaned up the terminals on the coolant temp sensor, and nothing changed -i changed the ignition coil and nothing changed -the car will start but wont idle with the tps unplugged -the car ran alittle better with the maf unplugged (normally the car will immediately die when revved, but now i can go upto 3000rpm with it unplugged - however, it seems to bog, and struggles to hold anything above 1500rpm does running better without the maf mean that the maf is the problem?