Fighting the Quad

KillerofRice · Post by **KillerofRice** » Sun Aug 19, 2007 12:26 am

I went to leave my brother's apartment tonight and I started the car. It fired up but was revving around 2750 rpms. So I kicked the gas pedal just revved up and came back to 2750 so I reached down and pulled on it. So I shut it off and figured why not give her another try, and turned out to do the same thing big surprise. So I went walked back to brother's and got a light and jumper wire b/c I noticed on the second start up the engine light was on. So I go to check the codes and it won't blink anything. I had something to blink at it but I calmed myself. Also my radiator fan runs as soon as the key hit the on position. So I'm figuring it's either the IAC valve or a TPS. Are there any other possibilities? I checked the throttle body and it's not stuck. Its a 90 GTZ q4 5 speed.

KillerofRice · Post by **KillerofRice** » Sun Aug 19, 2007 4:01 pm

Well I replaced the IAC and TPS and no change. I guess its a vacuum leak at the intake or a the inevitable head gasket finally caught me. So anybody got some helpful hints on my quest. Right now I'm frustrated and drinking a beer. So I'll drive it home and attack tomorrow.

KillerofRice · Post by **KillerofRice** » Mon Aug 20, 2007 12:54 am

Well on the drive home idling at 2500 I noticed I have a couple more problems. I have no speedo, trip meter, or odometer. The tach works flawless along with the other gauges. Could the computer have taken a dump? I love talking to myself on this subject. I'm calling the mechanic in the morning to see what he says and to see if he can possibly get the computer to read out. I'll keep myself up to date.

KillerofRice · Post by **KillerofRice** » Tue Aug 21, 2007 12:14 am

Ok my current update on the situation, not too much. Ok self time to go to bed.

Money pit Beretta · Post by **Money pit Beretta** » Tue Aug 21, 2007 9:14 pm

Did you ever find out what it was? My PCM failed once and I lost many things(speedo,heater & AC controls, and others). I was stuck in the limp home mode. I had to check the Chilton's Manual to see how all the systems were related. If that's not it tell me and I'll try to help as best I can.

KillerofRice · Post by **KillerofRice** » Wed Aug 22, 2007 12:09 am

Well I'm waiting on a new ecm, should be here thursday. I'm pulling it into the garage tomorrow to start tearing stuff apart and start to fill my rear motor mount and tranny mount. So the fun shall begin very shortly. The computer fuse was fine so the mechanic said it's probably the ecm.

rweatherford · Post by **rweatherford** » Wed Aug 22, 2007 8:03 am

Sorry I've been on vacation.

Yes I'd guess ECM. Good luck!

Money pit Beretta · Post by **Money pit Beretta** » Wed Aug 22, 2007 10:26 pm

Keep us updated. HEY, I once had a 83 Z28.

KillerofRice · Post by **KillerofRice** » Thu Aug 23, 2007 12:15 am

Well I got the ecm out and pulled the prom out. The new ecm should be here tomorrow and I'll put it in and see what she does. I miss my z28 but I wouldn't take it over the retta. It was a better beater b/c it was cheap to fix. I hoping to get her back on the road so I can go up and watch some of the little league world series in Williamsport.

KillerofRice · Post by **KillerofRice** » Thu Aug 23, 2007 12:50 pm

The new ecm is in and the car runs great. Thanks for the help guys. Now I must tackle making a front delrin mount and the tranny mount.

Money pit Beretta · Post by **Money pit Beretta** » Thu Aug 23, 2007 9:18 pm

That's good to hear! I miss working on rwd V8's also. I got my 90GT in 96 and just can't seem to give up on it (in the shop now for control arm bushings).

KillerofRice · Post by **KillerofRice** » Thu Aug 23, 2007 11:17 pm

Yea the camaro wasn't as bad to work on has the retta. I replaced control arm bushings that was fun. Definitely didn't do it the proper way but it worked .

Money pit Beretta · Post by **Money pit Beretta** » Fri Aug 24, 2007 11:24 pm

Well, we are getting off topic and they may shut us down. It's been good talking to and helping a fellow Z28 and 90 Beretta owner. I hate to cut it off like this, PM me sometime. I'll be posting too.

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