98 Intrigue - Misfire or transmission?

[IntrigueBeater]

I think I maybe having a combination of problems. I've been reading about a lot of the common problems these cars have. The car has 72,200 on it. I first replaced the plugs because it was throwing a code P1352 - mod$ 10 which was related to a misfire of some sort, I don't remember. That turned out to be a real pain because #2's plug broke leaving the threaded portion of the plug in the head. After a lot of swearing & an easy out, I changed all the plugs. I also changed the wires because I broke one & pulled another one almost all the way out of the boot. HEH

Anyway, the service engine soon comes on & turns off. It does the whole jerky shift thing but it's hard to tell. Sometimes is feels like it could be misfiring & sometimes it feels the transmission is hunting or prolongs a gear then bang shifts. I haven't checked the code since before I installed the wires & plugs but when it's not having the jerky/hunting transmission or misfire problem it runs great.

Can anyone tell me exactly what this code means P1352 - Mod$10, directly pertaining to a 98 Olds Intrigue. The know codes may vary from different GM models & years & also what I should try replacing or my course of action. I think it may have something to do with the ICM but another site said something about misfire cylinder #2 so I'm getting conflicting info.

PS. Something reguarding the transmission, the fluid looks like it's never been changed. Doesn't even look red anymore rather almost orangey now. I've read here people having the transmission problems flushing the fluid to no avail. Any help will be appreciated.

[IntrigueBeater]

I'll be going to autozone soon to see if it's still throwing the same code or something else since I changed the plugs & wires.

[LittleHoov]

You sure thats the right code number?

OBD II codes start with "P0" and then 3 more digits.

Googling that code # shows nothing.

The code for a cylinder #2 misfire is P0302

[shoman44]

this is your code The PCM detects an open circuit in the Bypass circuit(ignition) I will bet my paycheck on your problem. Check the connections to your PCM make sure u don't have any broken wires , next ignition control module, just about every gm vehicle needs one since they all are bad, and if the module isnt bad u can have your pcm reprogrammed if it can be reprogrammed or R+R it. IT IS 1 OF THESE PROBLEMS.. GOOD LUCK

[panzer dragoon]

http://service.gm.com/gmspo/mode6/pd...c38K_CFHWE.pdf

-you have an est short

http://answers.yahoo.com/question/in...9120046AA95gBq

-either get alldata or the service manuals to diagnose yourself or goto the GM dealer for the Tech2 route.

[BNaylor]

Originally Posted by LittleHoov

You sure thats the right code number?

It is a valid DTC. In addition to generic DTCs there are GM extended DTC codes starting wit P1XXX as shown by the GM Mode 6 charts and the GM factory service manual.

[IntrigueBeater]

Originally Posted by shoman44

this is your code The PCM detects an open circuit in the Bypass circuit(ignition) I will bet my paycheck on your problem. Check the connections to your PCM make sure u don't have any broken wires , next ignition control module, just about every gm vehicle needs one since they all are bad, and if the module isnt bad u can have your pcm reprogrammed if it can be reprogrammed or R+R it. IT IS 1 OF THESE PROBLEMS.. GOOD LUCK

thanks for your help guys. I read those links Panzer & will be trying to look for those things.

Shoman, can you tell me where the PCM is located to check the connections? Is the ICM located underneath the coils, where the one harness is plugged into with a 8mm or 10mm bolt?
Lastly, where would I get my PCM reprogrammed or R+R (Don't know what R+R stands for, heh) is that was the case. Sorry for being a noob but I don't know too much about GM vehicles. I know a manual would probably help me a lot here but honestly this is my winter car but still want it to run correctly.

[harmankardon35]

Id look into the trans fluid color...an orange colour I think may be a sign of the trans cooler leaking causing the antifreeze and trans fluid to mix. Id definatly change the fluid, and get the shop to pressure test the radiator. You just want to be sure theres no leak and if there is it should be fixed ASAP. Usually trans fluid gets to be a dark brown colour when old.

[IntrigueBeater]

I went to autozone tonight & it's still throwing the same code. "P1352"
The employee at autozone seems to think it's most likely a bad ICM because their known to go bad. Can anyone tell me where the ICM & PCM are located so I can check connections first.
I was on the hwy for a good 40 mins & it was stuttering/hiccuping a lot. Most of the time when I'm at constant speed & just slightly on the gas. If I hit the gas more it most of the time stops doing it or if I let off it stops. It's so hard to tell if it's transmission or misfire.

Thanks for the info about the tranny cooler. If thats the case, it figures. I'm feeling like it's one thing after the next. Geesh..

[LittleHoov]

The PCM is located inside the airbox.

The ICM is underneath the coils, youll have to remove all 3 to get too it. Check for corrosion in that area as well.

[IntrigueBeater]

Originally Posted by LittleHoov

The PCM is located inside the airbox.

The ICM is underneath the coils, youll have to remove all 3 to get too it. Check for corrosion in that area as well.

PCM is in airbox....interesting. I'm used to Honda's having ECU's located on the passenger side kick panel. Thanks for the info. Assuming I check all connections & everything is fine, would my next step be just to replace the ICM or is there a way to test? It sounds like people are confident it's just a bad connection somewhere.

[LittleHoov]

I dont know of a method to test the ICM, Auto Parts stores will test them, but Ive seen members on other forums have ICMs that are good tested bad and vice versa.

You can test the coils though, youll find a link to that procedure in your Private Messages.

[IntrigueBeater]

Autozone did tell me they don't test my particular year's ICM, figures.
So tonight afterwork I took apart the airbox. I can't believe thats where the PCM is. Anyway I did notice that on one side of one of the clips was not all the way flush. I didn't think it was loose enough to be the culprit but just to be safe I unplugged both of the clips for the PCM. Used an air compressor & blew out all the sand & crap in the air box.
After that I took off all the coils & ICM. Cleaned all the terminal to be safe & even used a wire brush on the metal surfaces in case it's used as a ground. Put everything back. So far, no SES, no skipping. Only time will tell because I only drove around 15mins tops.

Thanks Hoov for the info. I'll keep it updated if anything changes I'm just waiting for it to act up again. Now to try & get this damn remote to work...

[IntrigueBeater]

Day 3 & still no problem. Crossing my fingers...

[IntrigueBeater]

Problem came back a few weeks ago. Cleared the code & it was fine till Monday. Idk if it's an open circuit or whatever from a possible bad connection to the ICM/PCM but I really can't check all the wires to each. I'm not going to the dealer because I don't think I'll have this car by the summer. Is there any reccomendations or anyone have a similiar problem?
I'm thinking about just replacing the ICM & seeing if thats the problem assuming their known to be bad but their hella expensive.

One last thing to note, I've noticed this for awhile & it's begining to disturb me. Mostly everytime the car is moved for the first time since started, most of the time while reversing but sometimes in drive, it make this noise that I can only describe as say a bunch of metal parts or marbles shaking around in a container. I'm gonna try & record it one day. It only lasts for a second but it's really disturbing. As if say, parts inside the transmission are just spinning around or the motor. It's weird because obviously if their was major engine or transmission damage it would show all time but it mostly runs smooth & good. Only happens when you 1st move the car after you started it. Anyone experience this or have idea what's up?