Car stuttering and spitting when up to temp. help!

[rterry87]

I have an 87 eta, 297k.
When the car warms up it spits and sputters to the point where it will hardly accelerate.
that being said, I have replaced the following:

plugs
plug wires
coil
Distributor cap
rotor button
rebuilt/cleaned injectors

I am at a complete loss of what else it may be. Need help guys, point me in the right direction. Thanks.

[jlevie]

Replace the O2 sensor, then have a smoke test run to check for intake leaks.

[rterry87]

Ok, so I replaced the o2 sensor and still getting the same problem.

I am completely lost at this point, im just throwing $$$ to fix this one problem.

[Xmedina]

i am having the same problems and its driving me insane

[BergerNJ]

results of smoke test?

[entrepreneuR]

searching for the same culprit!

[paperplane94]

How is your fuel pressure? Make sure your regulator isn't bad.

Then check the resistance of all the temperature related sensors including,BNLT:
-IAT sensor in the AFM
-ECT sensor in the thermostat housing
-Any other sensors relating to temp for the ETA

All this should be done after verifying that there are no intake leaks.

[e30trooper]

im sorta the same issue. Ive got a high idle ( 1000- 1500 at times ) having hick ups under 2500 rpms and picks up fine after 3k. Last few days it was driving like shit. idle stuck at 1500 then would drop to 600 then back up. No idea what it could be, just need the car to last 2 weeks till i do my I head swap.

[matt0300]

Coolant temp sensor is what I would look at.

[caveman85]

I had a similar problem on my i....the afm crapped out....dont know if its the same on the eta but try unplugging the sensor

[e30trooper]

I had a similar problem on my i....the afm crapped out....dont know if its the same on the eta but try unplugging the sensor

Diffrent afm's, I tried this for the lolz. Put on a adjusted afm from my vert. The eta would run but was retarded rich. You could see unburnt fuel out the muffler at idle but then reved it screamed great. Afm could be my issue. Ill have to test someones.

[jlevie]

Gee folks, the most common cause of these sorts of problems is intake leaks. There are other possibilities, but until intake leaks are ruled out by a properly conducted smoke test and indicated repairs it makes no sense to consider other possible causes.