Jimmy acceleration problems

[greginportland]

should i return the cheap-arse plastic $16 distro cap too?

[BlazerLT]

All cap and rotors are plastic, no such thing as a metal cap and rotor other than the contacts.

[greginportland]

A long days work has been fairly succesful.
Replaced:
CPI unit
Nut Kit
Distributor Cap, rotor, wires & plugs.
Fram Air Filter
Also replaced EGR, TPS, and fuel filter a couple weeks ago.
She sounds clean, BUT

there seems to be a subtle knock, not loud, coming from EGR area, or maybe valve covers. not sure what to make of that. the EGR is mounted onto a thread that snapped, I just put a nut on it - but had to grind part of the EGR base down to get the nut onto the short thread sticking out. when i first put this on the EGR did not want to mount flush. i wonder if the knock is just air seeping from the EGR gasket, or something else.

almost in over my head...
thanks for all input!

[BlazerLT]

Oh god, this is not good.

Who knows but you should change your oil and your filter seeing your oil is probably full of gas from the CPI leaking.

[Northstar692002]

My jimmy was doing the same thing, and it turned out to be the ECM under the distributor. One of the plug socket's was broke inside, sometime's it would run and other time's nuthin. The ECM has to deliver the right voltage to the fuel pump or it doesn't maintain enough pressure to run. The plug's in the back can break (the ECM itself) and cause fluctuation's, slow sluggish, stalls, and not starting. It took alot of money and a great mechanic to figure that one out.

[c4n007]

Originally Posted by Northstar692002

My jimmy was doing the same thing, and it turned out to be the ECM under the distributor. One of the plug socket's was broke inside, sometime's it would run and other time's nuthin. The ECM has to deliver the right voltage to the fuel pump or it doesn't maintain enough pressure to run. The plug's in the back can break (the ECM itself) and cause fluctuation's, slow sluggish, stalls, and not starting. It took alot of money and a great mechanic to figure that one out.

How much is this part if I was to replace it myself, I'm having similar problems, random stalling then no start for about an hour, then runs fine for another day...

[rogeskic]

What was yours doing?


Anything like my problem?


http://www.automotiveforums.com/vbul...96#post3321896

[greginportland]

Originally Posted by BlazerLT

Oh god, this is not good.

Who knows but you should change your oil and your filter seeing your oil is probably full of gas from the CPI leaking.

AFter replacing the CPI - four months later - the Fuel Pressure Regulator side of the intake is washed clean. Damn. I thought the 'new' CPI would take care of this. I'll try putting a new regulator on the allegedly new CPI unit. Could it be anything else I should look into while I have the intake exposed?

My Injector ELectrical Connector does not fit tight onto the top two pins of the CPI...any creative solutions for that besides tape it tight on the outside? Or besides spending ??$$$$ on a new one...

THe reason my EGR was knocking a while back was because it was not on completely tight - slight gap, it was just air rapping out of it. I'll spare the details.\

Thanks and good luck to all!

[BlazerLT]

The grime in the upper plenum will take several thousands of miles to come back.

What you are seeing is the washing from the last CPI blowing.

[greginportland]

Originally Posted by BlazerLT

The grime in the upper plenum will take several thousands of miles to come back.

What you are seeing is the washing from the last CPI blowing.

Sh#t. I mean, that's good, I guess. It's not good I just paid $50 a Fuel Pressure Regulator though...I guess it's a waste of time to put it in.

You're quite helpful I should send you a xmas card or something! In August.

cheers

[BlazerLT]

I looked down my plenum to check a month ago and I thought the same thing until I llooked at the photos I took before I replaced it and the same markings and washed areas were there from the last one.