95s-10 hard starting when warm

[movin2stereo]

Originally Posted by rlith

No, you have CSFI, similar to CPI but sequentially fired (CPI was discontinued in 95)...If you're running rich one of your injector hoses may be bad. (also causes misfires)

I just checked the codes and I'm getting a P1351(Ignition control circuit voltage high and ignition control circuit open).Is that weird there 2 descriptions under one code? I am also getting a PO420 code(Catalyst system efficiency below threshold,bank 1).Would this fall under your injector hose threoy?What's involved in changing them?

[BlazerLT]

Originally Posted by movin2stereo

I just checked the codes and I'm getting a P1351(Ignition control circuit voltage high and ignition control circuit open).Is that weird there 2 descriptions under one code? I am also getting a PO420 code(Catalyst system efficiency below threshold,bank 1).Would this fall under your injector hose threoy?What's involved in changing them?

Ok, the P0420 code seems to point out that you cat is screwed or the O2 sensor behind the cat is bad. More than likely the cat is plugged.

More info here:

http://www.obd-codes.com/trouble_cod...old-bank-1.php

The other two codes will point to a bad ignition switch.

[movin2stereo]

Originally Posted by BlazerLT

Ok, the P0420 code seems to point out that you cat is screwed or the O2 sensor behind the cat is bad. More than likely the cat is plugged.

More info here:

http://www.obd-codes.com/trouble_cod...old-bank-1.php

The other two codes will point to a bad ignition switch.

I think somebody hollowed my cat out because it has a hollow sound to it when it's running(before I bought it).I know this because I poked out the wife's cavalier cat and it has the same hollow sound and also threw the PO420 code.The O2 sensor is new.Now this ignition switch.Would that cause the hard starting issue?Why would it fire right up when it's cold,but not whens it's warmed up?Is it the injection issue that this other guy is talking about?This truck is a constant pain in my ass!

[BlazerLT]

Could be that.

Also, check your fuel pressure.