Backfires off of idle

[jsmoe]

I have an '89 comanche eliminator 2wd 4.0 that started to not start occationally, no spark. Then it finally quit altogether. Well I have tested some things and replaced a few things. I have replaced the coil, distributer(used), CPS (new) and the fuel pump balast (it was cracked). in that order. It did get spark to the plugs after the CPS change and it will start and idle smooth but when trying to rev it a little to pull out it backfires and has no power. I'm stumped :(

 

any ideas out there would be appreciated. Dave aka jsmoe

[CWLONGSHOT]

Double check the WIRES for the CPS. The plug was a known problem. try a meter to be sure the plug is good.

 

If found to be faulty, just hard wire and eliminate the plug.

 

One other thing to remember, just cause a part is new, dosent eliminate it from speculation.

 

CW

[LEAD_NOT_FOLLOW]

Check your TPS!

 

http://www.greatlakesxj.com/tech/TPS.html

[jsmoe]

TPS ?

[LEAD_NOT_FOLLOW]

TPS ?

Throttle Position Sensor. Located on the throttle body.

 

See above link on how to test it.

[CWLONGSHOT]

Throttle Position Sensor

 

Its on your throttle body. don't JUST REMOVE IT!!! The way its attached is a specfic setting for your trucks idle. (if its a renix )

 

 

CW

[jsmoe]

Ok, thanks guys, I'll have to invest in a better meter and will post back when I've checked this thing

 

 

jsmoe

[jsmoe]

um... fiqures, i'de have the manual transmission and that link is for the automatic trans settings.... would you mind sending the link for the manual settings please ?.

 

 

 

jsmoe