Engine not starting

MATTD93

MEMBER
2000 FORD FOCUS
2.0L
4 CYL
2WD
MANUAL
190,000 MILES

I have a intermittent no crank no start with dashes on the odometer. I have replaced the PCM and a newly flashed key. I turn the ignition to on and all normal. I try to crank the engine nothing happens no sounds. Every now and then it will crank and sometimes when it does not crank I hold the ignition to the start position for ten second or so and it will crank no start. I have cleaned all grounds that I know of and have looked up that grounds the PCM. Fuse 9 and relay 20 are both good. I believe the relay is good because I can insert it while ignition is on and hear it energize. I do not know where to look next. Any help will be appreciated.

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
42,940 POSTS

Hello,

It sounds like you have an instrument cluster that is shorting out causing the problem you have described.

I would find a used cluster and plug it in to see what happens.

Please let us know what you find.

Cheers, Ken

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

Monday, August 14th, 2017 AT 6:19 PM

MATTD93

MEMBER
2 POSTS

I will pull a known good and do a test swap but I can't help but wonder would a shorting cluster cause other symptoms of electrical faults. Is there anything in the pcm ground/power circuit that could have failed. I have checked and rechecked every ground I can find. I get continuity from ground to pcm ground on the pcm plug so I know it's grounded. What would be a good resource for a schematic for this car, I can't seem to find any. Thanks in advanced

Was this

answer

helpful?

Yes

No

Monday, August 14th, 2017 AT 6:59 PM

KEN L

MASTER CERTIFIED MECHANIC
42,940 POSTS

I have found the wiring diagram for the computer (below) and a guide to help you do some testing.

https://www.2carpros.com/articles/how-to-check-wiring

Also I have seen where a bad starter can cause a delayed cranking condition as well. Can you use a test light to test the trigger wire when the ignition switch turned to the crank position?

Please let us know what you find.

Cheers, Ken

Images (Click to make bigger)