Hey guys, hoping you can help with a slow startup question.

My brother has a '99.5 with about 130k on it. It's extremely slow to startup even the the starter is spinning it over pretty quickly. I pulled my Edge CTS out of my truck to get some #'s off of his. At idle mine has about 700+ ICP, his has about 480. My IPR is about 14%, his is about 10%. The only other obvious things noticeable is that his oil pressure gauge takes 3+ solid seconds before it comes up. Once it's running, it's seems normal and ICP & IPR match mine under full acceleration. The only other thing that is odd, while cranking his volts drop to mid 10's but isn't turning over slow.

Any idea where to start?

 

Nobody???

I have two things for him to look into. His cranking volts seem to be really close to that 10v threshold to start and his ICP is barely meeting the 500psi pressure to start.

I'm gonna try and figure out AE for the first time and see if I can datalog some #'s.

 

Try hooking up some jumper cables and see if that helps starting faster.

How old are the batteries?

How old is the oil? Is it full? What kind/type of oil is in it?

 

The batteries have been in for 3-4 years. It doesn't sound like its turning over slow, but that the voltage the the CTS showed through the OBD-II port.

The oil is Valvoline 15w-40 Premium Blue. Not sure if its low or not, but doubt it. Its a double check for sure though...

 

Try using jumper cables. I have experienced the same thing over the years, cranks fast enough, but the voltage is too low that the injectors are not firing. Does it smoke while cranking? If not, then low voltage is likely the problem. If it does smoke, then glow plugs could be the problem.

 

UPDATE: It seems the problem was the batteries. After sitting for a period of time, it just didn't crank as it should have. The more often its drove and more time for the alternator to give em a good charge the better its been starting. Didn't even need to wall charge the batteries.

 

1. Select the parameters indicated from the Scan Tool parameter list and monitor while cranking engine.

Data List Monitoring Parameter:

V-PWR 10.5 VDC Minimum. (The CMP may fall out of the PCM circuit if vehicle voltage falls below 10.5v).

RPM 100 RPM Minimum (0 - CMP Suspect)

ICP 500 PSI or 3.4 MPAM Minimum the ICP should steadily climb during cranking. This indicates a healthy HPOP depending upon how high it climbs.

ICPv (KOEO) Spec 0.20v - 0.30v

FUEL PW: 1 MS - 6 MS (<1 / >6 IDM Suspect)

V-PWR - If indicating a low voltage condition, check battery voltage, charging system or power and ground circuits to the PCM.

DC% - Cranking NTE 20% / 65% is closed. (IPR Suspect)

2. RPM - Low RPM could be an indication of starting / charging system problems **

3. No RPM indicated with the engine cranking - could be CMP circuit fault, check for DTC’s.

4. ICP - A minimum of 500 PSI (3.4 mPa) is required before the injectors are enabled. No or low oil in the reservoir, system leakage, injector O-Rings, or faulty IPR could cause pressure loss.
Note: If no RPM signal is received, IPR duty cycle will default to 14%

5. FUEL PW - Even though a 1 to 6 mS FUEL PW is shown, it’s possible the IDM did not receive the signal due to a CI or FDCS circuit fault or internal IDM failure.

Hope this helps,
Tom