Important

Smash Hole said:
Why is that?

I don't see how a few degrees would cause catastrophic failure considering the thing ran like shit to begin with and now it's fine.
Click to expand...


It will be fine for a awhile, but it will go in and out. I had a 94 come in with the same thing done to it. They retarded timing with the dizzy because of they couldn't get it to quit missing. Turns out every valve in the head leaked like crazy an the cps was fritzed.


The computer controls timing. You reindex its baseline and it hunts for the time where it shouldnt. Put a timing light on it and its all over the place. I ended up just replacing the distributor entirely because i couldnt get it close enough to "home" to make the computer happy. Worst time i ever had making an ho run right, a local repair shop tried the fancy distributor fix
 
Josh is bringing me a HD dish to the crawl. My bro-in-law also offered me one. So I'm good on HD dishes...if we can get one to aim, it will be good, otherwise I might still be trying to find a non-HD one as they are easier to aim.

mac 'about the time I figure this out, we'll cancel it' gyvr
 
y2yjyvut.jpg

My pretty new tranny lines -6an
 
shortxjdoug said:
It will be fine for a awhile, but it will go in and out. I had a 94 come in with the same thing done to it. They retarded timing with the dizzy because of they couldn't get it to quit missing. Turns out every valve in the head leaked like crazy an the cps was fritzed.


The computer controls timing. You reindex its baseline and it hunts for the time where it shouldnt. Put a timing light on it and its all over the place. I ended up just replacing the distributor entirely because i couldnt get it close enough to "home" to make the computer happy. Worst time i ever had making an ho run right, a local repair shop tried the fancy distributor fix
Click to expand...


I would agree with you however this is the best it's ever run. And the fact that the newer distributor did in fact make it run better, though not perfect, tells me there is something going on there.. I think we are over estimating how much control the PCM has. We're talking 1992's finest Chrysler engineering... I honestly doubt it can figure out a few degrees here and there.

You having extreme leak down issues is another story, that should of been checked before dicking around with the distributor. I guarantee it never ran "right" going out the shops door, I don't care what the customer said.

Now regarding the CPS. There's a new one of those in here too. Same problem. Didn't change a thing. Explain that one to me.


zy7y5agu.jpg
 
How many miles on that motor...it's not as common on that year but the timing chain could have stretched enough to put it out a few degrees. I know it is more common for guys to have to re-index the 00-01s
 
Smash Hole said:
I would agree with you however this is the best it's ever run. And the fact that the newer distributor did in fact make it run better, though not perfect, tells me there is something going on there.. I think we are over estimating how much control the PCM has. We're talking 1992's finest Chrysler engineering... I honestly doubt it can figure out a few degrees here and there.

You having extreme leak down issues is another story, that should of been checked before dicking around with the distributor. I guarantee it never ran "right" going out the shops door, I don't care what the customer said.

Now regarding the CPS. There's a new one of those in here too. Same problem. Didn't change a thing. Explain that one to me.
Click to expand...

I can watch the timing real time on my iPad. I don't know what any of that means, but the numbers go up and down :)
 
I only turned it a few degrees, I probably could of got a bigger drill bit and hogged it out instead of cutting the ears off. Didn't take much.

I think you're on to something.
 
I wonder if that's part of my problem. Mine is taking longer than the typical Renix 2-3 sec to start, has a light idle miss, and generally runs kinda crappy.
 
*89Laredo* said:
I wonder if that's part of my problem. Mine is taking longer than the typical Renix 2-3 sec to start, has a light idle miss, and generally runs kinda crappy.
Click to expand...


Renix needs high quality sensor input. How old are the major sensors in it (o2, cam, map etc) and have you redone the ground cables?

Ill be honest too i was very impressed with how nates pile ran when we put the new dorman vacuum harness harness on it. Renix likes to be oem and it gets great mileage when it is
 
Re: Re: Important

shortxjdoug said:
Renix needs high quality sensor input. How old are the major sensors in it (o2, cam, map etc) and have you redone the ground cables?

Ill be honest too i was very impressed with how nates pile ran when we put the new dorman vacuum harness harness on it. Renix likes to be oem and it gets great mileage when it is
Click to expand...

Oxygen sensor is 3 years old but I think it's a Bosch. TPS is ~3yo too.
All other sensors haven't been touched since I bought it, and I know the cps wiring on the sensor didn't look too good last time I looked at it.
Grounds are good. TPS initial setting is good .


It's had the miss since I bought it. Nothing I've done to it has made it better or worse, it's stayed the same. It's only at idle. Thinking maybe I have a lazy cylinder.

It has 91-95 fuel lines/rail, ford injectors, cps advanced and a 50 psi fuel reg, so that makes diagnosis a little harder lol. But like I said, it ran like this before all of these changes.
Have changed coil/icm, cap/rotor, wires/plugs.

The vacuum system is far from oem and egr is deleted.

LTFT shows that it's pulling fuel but you can still smell it running super rich.
If I decide to keep it I will be doing a rebuild/stroker, I will change sensors first just to see if I can make the stock motor run right before throwing another engine in.
 
You must log in or register to reply here.

Similar threads

1
New here, but not to Jeeps
Replies
1
Views
58
macgyvr
macgyvr
C
Delete my info
Replies
3
Views
123
Numbers
Numbers
A
Power window issues, all 4 were working but no longer
Replies
5
Views
272
maxbraketorque
M
S
Troubleshooting electric door locks on a 98
Replies
1
Views
187
SurplusFan98
S
Bent
The BEST Medicine
Replies
7
Views
193
Nimrod
Nimrod
Back
Top