88 RX7 Idle Problems....
01-26-06, 08:36 PM
#1
Junior Member
Thread Starter
Join Date: Jan 2006
Location: Cincinnati
Posts: 17
Likes: 0
Received 0 Likes
on
0 Posts
88 RX7 Idle Problems....
Hey All,
I am having an “issue” with my NA RX7. I was driving back from the store when suddenly, suddenly, all of a sudden the engine idle went nuts!! For some unapparent reason now whenever I am not driving the idle bounces between 1400 and 1700 RPMs (rather violently). It is quite alarming, it usually idles gently at 600. I turned the car off and tried later it was doing the same thing – engine warm and all. What could cause something weird like this? It’s almost as if the computer thinks it’s going to stall at 1400 and keeps “tapping” gas in there…
Still drives fine with full power....
It has 80k, K&N intake and upgraded exhaust (including cats). The plugs, wires, and fuel filter were replaced about 4 years ago (but only 20k).
Help!!!!!!!
I am having an “issue” with my NA RX7. I was driving back from the store when suddenly, suddenly, all of a sudden the engine idle went nuts!! For some unapparent reason now whenever I am not driving the idle bounces between 1400 and 1700 RPMs (rather violently). It is quite alarming, it usually idles gently at 600. I turned the car off and tried later it was doing the same thing – engine warm and all. What could cause something weird like this? It’s almost as if the computer thinks it’s going to stall at 1400 and keeps “tapping” gas in there…
Still drives fine with full power....
It has 80k, K&N intake and upgraded exhaust (including cats). The plugs, wires, and fuel filter were replaced about 4 years ago (but only 20k).
Help!!!!!!!
01-27-06, 08:43 AM
#3
Seduced by the DARK SIDE
Join Date: Apr 2001
Location: Orange Park FL (near Jax)
Posts: 7,323
Likes: 0
Received 2 Likes
on
2 Posts
Welcome to the forum:
About half the hoses & solenoids on top of the motor are for idle speed control.
A short cycle zoom zoom around 1500 is usually a vac leak - maybe a hose came off.
When a vac leak happens, revs go up, but the TPS is telling the ECU to idle, so the ECU sees "idle at >1500" and gives a fuel cut. Revs the drop & the cycle repeats.
About half the hoses & solenoids on top of the motor are for idle speed control.
A short cycle zoom zoom around 1500 is usually a vac leak - maybe a hose came off.
When a vac leak happens, revs go up, but the TPS is telling the ECU to idle, so the ECU sees "idle at >1500" and gives a fuel cut. Revs the drop & the cycle repeats.
01-27-06, 11:36 AM
#4
Boost ahoy!
Join Date: Jan 2006
Location: Joplin, MO
Posts: 968
Likes: 0
Received 0 Likes
on
0 Posts
I had a problem like that...not exact but similar...I replaced a couple vac hoses and my intake gaskit on the manifold *I think..god I don't know what things are called..* and it set it straight.
just my 2 cents.
just my 2 cents.
01-27-06, 11:41 AM
#5
Full Member
Join Date: Aug 2004
Location: Cali
Posts: 120
Likes: 0
Received 0 Likes
on
0 Posts
yea the same thing happened to mine, (still havent fixed it yet) i hear if u spray carb cleaner in the engine bay, the idle will change and will narrow down where the loose hose is.
01-27-06, 11:46 AM
#6
Banned. I got OWNED!!!
https://www.rx7club.com/2nd-gen-archive-72/faq-idle-problems-334730/
This will probably help. Archive section > all.
This will probably help. Archive section > all.
Thread
Thread Starter
Forum
Replies
Last Post
ncds_fc
New Member RX-7 Technical
1
08-15-15 10:06 AM
rkhanso
2nd Generation Specific (1986-1992)
1
08-13-15 11:40 AM
