Hard starting

[88whitemanche]

Hey guys I have an 88 2.5 4x4

 

I have a problem with hard starting when cold. It'll take a few attempts from 10 to 15 secs before it starts up and when it would warm up with wouldn't be a problem to start after warm hut once it cools down it won't start up again.... I've changed the fuel pump fuel tank complete tune up not any sensors yet I don't want tothrow parts at it to see what it is.....do u guys think it can be the fuel pressure regulator not giving the pressure needed to pushthe fuel to the throttle body?

 

 

 

 

 

please help this a project that I'm trying to get on the road.... Thanks

[Jeep Driver]

It may be time to start throwing some sensors at it.

 

And cleaning your grounds and C101 connector.

 

I would start with the O2 and CPS.

 

And check for vacuum leaks.

[88whitemanche]

I just replaced my vacuum lines and disconnecting the CPs... But I don't want to throw sensors at it...eventhough I plan to keep the truck for a while to keep things new but I would want to find the solution rather than just throwing sensors I mean I work but money is limited to buy each sensors but when I do start what sensors should I start with?

[Jeep Driver]

Well others can state their opinions.............

 

The approach I took with mine was to go through the entire electrical system.........upgrade and replace.

 

Even though the previous owner had the engine rebuilt (only 5K on when I got it) he did not replace any of the sensors or upgraded any of the electrical.

 

After 25 years...........don't you think it's time?

 

 

BTW.....it does make difference.......a noticeable one. And I have the same 88 2.5 as you and if you want the full potential out of it......well......

[Jeep Driver]

Also getting rid of the cat and that useless crappy-@$$ air box will make a huge difference.

 

 

Clean your throttle body too.

[Jeep Driver]

I just replaced my vacuum lines and disconnecting the CPs... But I don't want to throw sensors at it...eventhough I plan to keep the truck for a while to keep things new but I would want to find the solution rather than just throwing sensors I mean I work but money is limited to buy each sensors but when I do start what sensors should I start with?

 

 

CPS is the crank shaft position sensor.........they will load up with filth and may cause it not to read correctly. But if you pull it out to clean it I'd go ahead and replace it.......you'll only want to do it once.......PITA.

 

You stated here you disconnected the CPs..........?

[88whitemanche]

Yes I disconnected it and cleaned it and didn't start alOt of cranking but no starting....I was also reading up on some hard starting combo and tried one that if I press the pedal a little bit and try starting it and it fired right up...sobi adjusted the throttle position and fires up every time I'm going to wait a few hours and try again if it keeps cranking I'll start changing sensors like cps and tps and your right about the wires and connectors and sensors in the meanwhile from paycheck to paycheck I'll add more pcs my next step with theanche is the lift kit thinking about going with the rc 3"lift with a 2"coil spacer up front