Car stall when motor is hot

[punka44]

I have Eclipse 1991 2.0 DOHC NT a nd I have problem with my stalling car. When I turn up when motor is cold, everything fine. But when it's reachest normal operate temperature and the car is idlling, the car dies. Sometimes the motor idlle perfect and sometimes stall. I check all motor electric equipment (like a TPS, CAS, ISC, all sensors and I have new spark plug cables) by Chiltons manual and everything OK. I also have new ECU. It's doing only when the motor reachest the normal operate temperature. I have no Chec Engine control and any other symptoms. Also in original Mitsu service have no idea.
Thanks.

 

[punka44]

No idea guys???

 

[gurrmanator]

I have Eclipse 1991 2.0 DOHC NT a nd I have problem with my stalling car. When I turn up when motor is cold, everything fine. But when it's reachest normal operate temperature and the car is idlling, the car dies. Sometimes the motor idlle perfect and sometimes stall. I check all motor electric equipment (like a TPS, CAS, ISC, all sensors and I have new spark plug cables) by Chiltons manual and everything OK. I also have new ECU. It's doing only when the motor reachest the normal operate temperature. I have no Chec Engine control and any other symptoms. Also in original Mitsu service have no idea.
Thanks.

is your ecu exactly the same as your old one?your new ecu might not be reading all the sensors correctly.

 

[punka44]

My new ECU is from Mitsubishi Galant 1993. The Galants have the same motor as the Eclipses. The ECU is OK because I change it last year and for long time was everything OK.
Last week I try to replace my ISC and MAS and there was no change. I have one last idea - change my fuel filter. I'll try this one and I'll write if it's better.

 

[punka44]

Yesterday a changed my fuel filter but there is no change. I'm totaly shiftless, I don't know what to do. I have only one possibility, maybe it could be a O2 sensor. But I measure it by the Chilton (only the resistance when motor was stopped) and everithing seems OK. I have problem only when the motor reachest operation temperature. Is there a some connection with O2 sensor?
Thanks.

 

[punka44]

Anybody knows? The problem still live and I have no idea.
Tha nks.

 

[tim4g63fast]

o2 sensors do read tempature its unlikly but it may be

 

[punka44]

If I check measures (with ohm meter) on O2 sensor, it was OK. But maybe it's reading some trouble informations when the car is idling. Change the O2 sensor is not cheap. How can I check, if it's really O2 sensor? I read somewhere, that the car (Talon) was stalling because there was bad sparks. It's possible? I have an original Mitsubishi sparks fr two years. Maybe if change them for NKG it will be better?
Thanks a lot.

 

[punka44]

My car still dies! Please help if you know!!.

 

[l3LacK Tsi]

i'm having the same sort of problem with my 91 tsi fwd. although yours in n/t it might be the same thing i also replaced my ecu,isc, and tps. have you checked the compression? wet and dry test it could be losing compression somewhere. im still trying to figure out mine if i come up with the answer ill post for you to try good luck

 

[ddavisaf]

You're running 2 year old plugs??? That's your problem. Change your plugs. If you plugs are new and you're still stalling....

Are you idling rough at all? Give details

 

[punka44]

I don't think, that is a compresion because it's doing only when the motor reachest the optimal temperature.But I will try to do a compresion test. Yes DDavisaf, I believe that you will be right. I have the same idea about my spark plugs. Tomorow I'm going buy new NGK BPR6EY-11 and I'm very suprised for differences. My idling is sometimes good but sometimes its going from 800 to 1200 RPM. And then the motor dies. When I turn up everithing is OK for 3-5 min. and then the same.
Thank's a lot for your help a I will write when I change my spark plugs.

 

[punka44]

Hi guys,
I changed my spark plugs for new brand NGK but the car still DIES. What else have I change to don't stall my car !!!???

 

[ddavisaf]

Are you throwing a CEL? What are the plugs gaped to? Are they platinum?

O2 sensor is 60 bucks, so it's not to bad. Have you had a blown headgasket, or any other significant major repairs does lately?

 

[punka44]

No I don't have any CEL for whole time. When I bought my car I found a list o paper from Mitsubishi service, where was a note, that there was changed head gasket. But I don't know the reason. I have any sign for blown head. I don't any significant major repairs on my car. My new plugs are NGK BPR6EY (V - technology) no platinum. They are the same as BPR6ES - this are based on classic technology. Do you thing to buy a new O2 sensor? I spent lot of money to try solve this problem and I don't want to spent more for things, that will be no solve this problem. But if could be this the solution I will be glad.
Thanks for ideas.

 

[punka44]

I tried to adjust BISS, I put more air there and now is car running better, but it's still no perfect. It's no stalling but now sometimes goes RPM to 1500 and sometimes is normal about 900. Maybe there is some leak, I have no more ideas.

 

[punka44]

I tried everything, nothing works. No vacuum leaks, nothing broke. Last thing, I changed Engine temp. sensor and now it works !!! I drive for two weeks and I have no stall. Maybe this is the solution. I will see later.

 

[punka44]

It's terrible. The car is still stalling. It seems that everything OK, it goes perfect, but yesterday it start again. I have no idea what to do.

 

[ddavisaf]

Alrighty.... lets start over.


You've changed your plugs and wires. Engine Temp Sensor. And you've tested alot of the other sensors and they all test out okay.


You said you had a blown headgasket in the past. How long ago was it, right before you got the car?
You're not throwing any codes.

I've got a feeling it's one of three things.
ISC
O2 Sensor (both)
MAF

Take a look through this..... http://members.shaw.ca/costall/1000Q/answers-problems.htm

I know a couple of the links there aren't functioning, but it'll give you a place to start. Read over that and post back with questions. Try testing your ISC and TPS. See if either one of those is bad.

 

[punka44]

Thank's a lot ddavisaf.
I red in service papers that the headgasket was changed in 1997. I bought my car in 2002 and for a year there was no problem with car. I'm not throwing any codes.

You wrote:
I've got a feeling it's one of three things.
ISC
O2 Sensor (both)
MAF

ISC - checked four times, its absolutely OK.
O2 sensor - I have only 1 sensor, the measures are the same as in Chilton manual.
MAF - measures are good and also I tried change MAF from another Eclipse and the problem was still on.
Also TPS - ohmmeter reads right values.

I will check the www site and maybe I'll find something.

 

[Flavor-DSM]

I think I may be in the same boat with you.. I have a 91 AWD Talon TSI.. My car, too, idles fine when its cold but as soon as it hits normal operating temperature it will stall out and die when trying to idle .. Let me know if you get a fix and I'll give you a shout if I can figure it out. I'm going to try replacing the ISC this weekend.. I'll let you know how that goes. Hopefully we can figure this crap out.

 

[punka44]

I believe that we get a fix. I drove with car this week and no stall. I did nothing with motor,etc. But I believe, that it comes back like every time. I tried put another ISC to my car from another Eclipse and there was no change. This is not a solution (maybe only for me). Good luck.

 

[ddavisaf]

I'm a little confused. Did you get it working correctly? What did you do exactly?

 

[punka44]

I'm also confused as you ddavisaf. I did nothing and there is the problem. Sometimes the car goes perfectly with no problems. And sometimes it stall four-six times for one day. I'm not working on my car yet because I don't know what I have to do or where I can find a problem part of this stalling.